Home / 28,253,702.40-42,380,553.60-13,885,987.20

Finding the Fourth Proportional to 28,253,702.40, 42,380,553.60 and 13,885,987.20

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Solution

The fourth proportional to 28,253,702.40, 42,380,553.60 and 13,885,987.20 is: 20,828,980.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,253,702.40 : 42,380,553.60 = 13,885,987.20 : x
  2. Step 2: Convert to fraction form
    28,253,702.40/42,380,553.60 = 13,885,987.20/x
  3. Step 3: Cross multiply
    28,253,702.40x = 42,380,553.60 × 13,885,987.20
  4. Step 4: Simplify right side
    28,253,702.40x = 588,495,824,818,513.88
  5. Step 5: Solve for x
    x = 588,495,824,818,513.88/28,253,702.40
  6. Step 6: Final answer
    x = 20,828,980.80

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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.