Home / 28,512,393.60-42,693,940.80-20,898,134.40

Finding the Fourth Proportional to 28,512,393.60, 42,693,940.80 and 20,898,134.40

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Solution

The fourth proportional to 28,512,393.60, 42,693,940.80 and 20,898,134.40 is: 31,292,487.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,512,393.60 : 42,693,940.80 = 20,898,134.40 : x
  2. Step 2: Convert to fraction form
    28,512,393.60/42,693,940.80 = 20,898,134.40/x
  3. Step 3: Cross multiply
    28,512,393.60x = 42,693,940.80 × 20,898,134.40
  4. Step 4: Simplify right side
    28,512,393.60x = 892,223,712,904,043.38
  5. Step 5: Solve for x
    x = 892,223,712,904,043.38/28,512,393.60
  6. Step 6: Final answer
    x = 31,292,487.24

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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.