Home / 15,745,020.71-21,728,229.45-8,776,140.14

Finding the Fourth Proportional to 15,745,020.71, 21,728,229.45 and 8,776,140.14

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Solution

The fourth proportional to 15,745,020.71, 21,728,229.45 and 8,776,140.14 is: 12,111,129.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,745,020.71 : 21,728,229.45 = 8,776,140.14 : x
  2. Step 2: Convert to fraction form
    15,745,020.71/21,728,229.45 = 8,776,140.14/x
  3. Step 3: Cross multiply
    15,745,020.71x = 21,728,229.45 × 8,776,140.14
  4. Step 4: Simplify right side
    15,745,020.71x = 190,689,986,668,685.16
  5. Step 5: Solve for x
    x = 190,689,986,668,685.16/15,745,020.71
  6. Step 6: Final answer
    x = 12,111,129.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.