Home / 20,398.18-28,152.41-11,325.62

Finding the Fourth Proportional to 20,398.18, 28,152.41 and 11,325.62

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Solution

The fourth proportional to 20,398.18, 28,152.41 and 11,325.62 is: 15,630.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,398.18 : 28,152.41 = 11,325.62 : x
  2. Step 2: Convert to fraction form
    20,398.18/28,152.41 = 11,325.62/x
  3. Step 3: Cross multiply
    20,398.18x = 28,152.41 × 11,325.62
  4. Step 4: Simplify right side
    20,398.18x = 318,843,575.20
  5. Step 5: Solve for x
    x = 318,843,575.20/20,398.18
  6. Step 6: Final answer
    x = 15,630.98

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1.5x scale

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.