Home / 20,425,500.78-28,187,248.23-11,258,179.98

Finding the Fourth Proportional to 20,425,500.78, 28,187,248.23 and 11,258,179.98

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Solution

The fourth proportional to 20,425,500.78, 28,187,248.23 and 11,258,179.98 is: 15,536,319.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,425,500.78 : 28,187,248.23 = 11,258,179.98 : x
  2. Step 2: Convert to fraction form
    20,425,500.78/28,187,248.23 = 11,258,179.98/x
  3. Step 3: Cross multiply
    20,425,500.78x = 28,187,248.23 × 11,258,179.98
  4. Step 4: Simplify right side
    20,425,500.78x = 317,337,113,714,276.44
  5. Step 5: Solve for x
    x = 317,337,113,714,276.44/20,425,500.78
  6. Step 6: Final answer
    x = 15,536,319.87

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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.