Home / 21,375,898.40-32,138,497.20-20,928,000.80

Finding the Fourth Proportional to 21,375,898.40, 32,138,497.20 and 20,928,000.80

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Solution

The fourth proportional to 21,375,898.40, 32,138,497.20 and 20,928,000.80 is: 31,465,086.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,375,898.40 : 32,138,497.20 = 20,928,000.80 : x
  2. Step 2: Convert to fraction form
    21,375,898.40/32,138,497.20 = 20,928,000.80/x
  3. Step 3: Cross multiply
    21,375,898.40x = 32,138,497.20 × 20,928,000.80
  4. Step 4: Simplify right side
    21,375,898.40x = 672,594,495,112,397.75
  5. Step 5: Solve for x
    x = 672,594,495,112,397.75/21,375,898.40
  6. Step 6: Final answer
    x = 31,465,086.64

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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.