Home / 20,712,932.53-28,584,071.04-11,420,520.58

Finding the Fourth Proportional to 20,712,932.53, 28,584,071.04 and 11,420,520.58

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Solution

The fourth proportional to 20,712,932.53, 28,584,071.04 and 11,420,520.58 is: 15,760,441.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712,932.53 : 28,584,071.04 = 11,420,520.58 : x
  2. Step 2: Convert to fraction form
    20,712,932.53/28,584,071.04 = 11,420,520.58/x
  3. Step 3: Cross multiply
    20,712,932.53x = 28,584,071.04 × 11,420,520.58
  4. Step 4: Simplify right side
    20,712,932.53x = 326,444,971,572,502
  5. Step 5: Solve for x
    x = 326,444,971,572,502/20,712,932.53
  6. Step 6: Final answer
    x = 15,760,441.99

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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.