Home / 20,337,890.63-28,068,020.03-11,518,910.74

Finding the Fourth Proportional to 20,337,890.63, 28,068,020.03 and 11,518,910.74

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Solution

The fourth proportional to 20,337,890.63, 28,068,020.03 and 11,518,910.74 is: 15,897,077.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,337,890.63 : 28,068,020.03 = 11,518,910.74 : x
  2. Step 2: Convert to fraction form
    20,337,890.63/28,068,020.03 = 11,518,910.74/x
  3. Step 3: Cross multiply
    20,337,890.63x = 28,068,020.03 × 11,518,910.74
  4. Step 4: Simplify right side
    20,337,890.63x = 323,313,017,233,762
  5. Step 5: Solve for x
    x = 323,313,017,233,762/20,337,890.63
  6. Step 6: Final answer
    x = 15,897,077.19

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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.