Home / 15,853,937.60-21,877,702.80-8,978,469.68

Finding the Fourth Proportional to 15,853,937.60, 21,877,702.80 and 8,978,469.68

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Solution

The fourth proportional to 15,853,937.60, 21,877,702.80 and 8,978,469.68 is: 12,389,874.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,853,937.60 : 21,877,702.80 = 8,978,469.68 : x
  2. Step 2: Convert to fraction form
    15,853,937.60/21,877,702.80 = 8,978,469.68/x
  3. Step 3: Cross multiply
    15,853,937.60x = 21,877,702.80 × 8,978,469.68
  4. Step 4: Simplify right side
    15,853,937.60x = 196,428,291,257,851.09
  5. Step 5: Solve for x
    x = 196,428,291,257,851.09/15,853,937.60
  6. Step 6: Final answer
    x = 12,389,874.13

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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.