Home / 12,778,935.20-19,168,402.80-7,992,029.60

Finding the Fourth Proportional to 12,778,935.20, 19,168,402.80 and 7,992,029.60

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Solution

The fourth proportional to 12,778,935.20, 19,168,402.80 and 7,992,029.60 is: 11,988,044.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,778,935.20 : 19,168,402.80 = 7,992,029.60 : x
  2. Step 2: Convert to fraction form
    12,778,935.20/19,168,402.80 = 7,992,029.60/x
  3. Step 3: Cross multiply
    12,778,935.20x = 19,168,402.80 × 7,992,029.60
  4. Step 4: Simplify right side
    12,778,935.20x = 153,194,442,562,322.88
  5. Step 5: Solve for x
    x = 153,194,442,562,322.88/12,778,935.20
  6. Step 6: Final answer
    x = 11,988,044.40

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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.