Home / 20,123.55-30,156.53-13,960.35

Finding the Fourth Proportional to 20,123.55, 30,156.53 and 13,960.35

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Solution

The fourth proportional to 20,123.55, 30,156.53 and 13,960.35 is: 20,920.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123.55 : 30,156.53 = 13,960.35 : x
  2. Step 2: Convert to fraction form
    20,123.55/30,156.53 = 13,960.35/x
  3. Step 3: Cross multiply
    20,123.55x = 30,156.53 × 13,960.35
  4. Step 4: Simplify right side
    20,123.55x = 420,995,643.78
  5. Step 5: Solve for x
    x = 420,995,643.78/20,123.55
  6. Step 6: Final answer
    x = 20,920.55

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.