Home / 12,992,445.90-19,488,668.85-9,780,180.30

Finding the Fourth Proportional to 12,992,445.90, 19,488,668.85 and 9,780,180.30

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Solution

The fourth proportional to 12,992,445.90, 19,488,668.85 and 9,780,180.30 is: 14,670,270.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,992,445.90 : 19,488,668.85 = 9,780,180.30 : x
  2. Step 2: Convert to fraction form
    12,992,445.90/19,488,668.85 = 9,780,180.30/x
  3. Step 3: Cross multiply
    12,992,445.90x = 19,488,668.85 × 9,780,180.30
  4. Step 4: Simplify right side
    12,992,445.90x = 190,602,695,159,993.69
  5. Step 5: Solve for x
    x = 190,602,695,159,993.69/12,992,445.90
  6. Step 6: Final answer
    x = 14,670,270.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.