Home / 20,860,812.10-31,291,218.15-17,680,039.30

Finding the Fourth Proportional to 20,860,812.10, 31,291,218.15 and 17,680,039.30

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Solution

The fourth proportional to 20,860,812.10, 31,291,218.15 and 17,680,039.30 is: 26,520,058.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,860,812.10 : 31,291,218.15 = 17,680,039.30 : x
  2. Step 2: Convert to fraction form
    20,860,812.10/31,291,218.15 = 17,680,039.30/x
  3. Step 3: Cross multiply
    20,860,812.10x = 31,291,218.15 × 17,680,039.30
  4. Step 4: Simplify right side
    20,860,812.10x = 553,229,966,636,873.31
  5. Step 5: Solve for x
    x = 553,229,966,636,873.31/20,860,812.10
  6. Step 6: Final answer
    x = 26,520,058.95

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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.