Home / 20,771,862.47-28,665,259.16-11,352,843.72

Finding the Fourth Proportional to 20,771,862.47, 28,665,259.16 and 11,352,843.72

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Solution

The fourth proportional to 20,771,862.47, 28,665,259.16 and 11,352,843.72 is: 15,666,972.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,771,862.47 : 28,665,259.16 = 11,352,843.72 : x
  2. Step 2: Convert to fraction form
    20,771,862.47/28,665,259.16 = 11,352,843.72/x
  3. Step 3: Cross multiply
    20,771,862.47x = 28,665,259.16 × 11,352,843.72
  4. Step 4: Simplify right side
    20,771,862.47x = 325,432,207,436,778.50
  5. Step 5: Solve for x
    x = 325,432,207,436,778.50/20,771,862.47
  6. Step 6: Final answer
    x = 15,666,972.95

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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.