Home / 20,808,177.52-28,714,636.20-11,515,188.32

Finding the Fourth Proportional to 20,808,177.52, 28,714,636.20 and 11,515,188.32

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Solution

The fourth proportional to 20,808,177.52, 28,714,636.20 and 11,515,188.32 is: 15,890,600.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,808,177.52 : 28,714,636.20 = 11,515,188.32 : x
  2. Step 2: Convert to fraction form
    20,808,177.52/28,714,636.20 = 11,515,188.32/x
  3. Step 3: Cross multiply
    20,808,177.52x = 28,714,636.20 × 11,515,188.32
  4. Step 4: Simplify right side
    20,808,177.52x = 330,654,443,383,289.19
  5. Step 5: Solve for x
    x = 330,654,443,383,289.19/20,808,177.52
  6. Step 6: Final answer
    x = 15,890,600.85

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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.