Home / 12,992,446.90-19,488,670.35-9,780,181.30

Finding the Fourth Proportional to 12,992,446.90, 19,488,670.35 and 9,780,181.30

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Solution

The fourth proportional to 12,992,446.90, 19,488,670.35 and 9,780,181.30 is: 14,670,271.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,992,446.90 : 19,488,670.35 = 9,780,181.30 : x
  2. Step 2: Convert to fraction form
    12,992,446.90/19,488,670.35 = 9,780,181.30/x
  3. Step 3: Cross multiply
    12,992,446.90x = 19,488,670.35 × 9,780,181.30
  4. Step 4: Simplify right side
    12,992,446.90x = 190,602,729,318,934.47
  5. Step 5: Solve for x
    x = 190,602,729,318,934.47/12,992,446.90
  6. Step 6: Final answer
    x = 14,670,271.95

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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.