Home / 20,443,531.82-28,215,128.93-13,109,646.02

Finding the Fourth Proportional to 20,443,531.82, 28,215,128.93 and 13,109,646.02

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Solution

The fourth proportional to 20,443,531.82, 28,215,128.93 and 13,109,646.02 is: 18,093,270.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,443,531.82 : 28,215,128.93 = 13,109,646.02 : x
  2. Step 2: Convert to fraction form
    20,443,531.82/28,215,128.93 = 13,109,646.02/x
  3. Step 3: Cross multiply
    20,443,531.82x = 28,215,128.93 × 13,109,646.02
  4. Step 4: Simplify right side
    20,443,531.82x = 369,890,352,474,337.50
  5. Step 5: Solve for x
    x = 369,890,352,474,337.50/20,443,531.82
  6. Step 6: Final answer
    x = 18,093,270.57

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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.