Home / 21,309,712.10-31,964,568.15-7,851,788.90

Finding the Fourth Proportional to 21,309,712.10, 31,964,568.15 and 7,851,788.90

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Solution

The fourth proportional to 21,309,712.10, 31,964,568.15 and 7,851,788.90 is: 11,777,683.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309,712.10 : 31,964,568.15 = 7,851,788.90 : x
  2. Step 2: Convert to fraction form
    21,309,712.10/31,964,568.15 = 7,851,788.90/x
  3. Step 3: Cross multiply
    21,309,712.10x = 31,964,568.15 × 7,851,788.90
  4. Step 4: Simplify right side
    21,309,712.10x = 250,979,041,393,463.53
  5. Step 5: Solve for x
    x = 250,979,041,393,463.53/21,309,712.10
  6. Step 6: Final answer
    x = 11,777,683.35

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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.