Home / 16,230.20-22,397.18-9,515.70

Finding the Fourth Proportional to 16,230.20, 22,397.18 and 9,515.70

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Solution

The fourth proportional to 16,230.20, 22,397.18 and 9,515.70 is: 13,131.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,230.20 : 22,397.18 = 9,515.70 : x
  2. Step 2: Convert to fraction form
    16,230.20/22,397.18 = 9,515.70/x
  3. Step 3: Cross multiply
    16,230.20x = 22,397.18 × 9,515.70
  4. Step 4: Simplify right side
    16,230.20x = 213,124,798.15
  5. Step 5: Solve for x
    x = 213,124,798.15/16,230.20
  6. Step 6: Final answer
    x = 13,131.38

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Half scale
Find fourth proportional to 32,460.39, 44,794.35 and 19,031.40
Double scale
Find fourth proportional to 16,231.20, 22,398.55 and 9,516.70
Similar ratio
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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.