Home / 30,688.28-42,344.87-17,258.73

Finding the Fourth Proportional to 30,688.28, 42,344.87 and 17,258.73

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Solution

The fourth proportional to 30,688.28, 42,344.87 and 17,258.73 is: 23,814.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,688.28 : 42,344.87 = 17,258.73 : x
  2. Step 2: Convert to fraction form
    30,688.28/42,344.87 = 17,258.73/x
  3. Step 3: Cross multiply
    30,688.28x = 42,344.87 × 17,258.73
  4. Step 4: Simplify right side
    30,688.28x = 730,818,591.92
  5. Step 5: Solve for x
    x = 730,818,591.92/30,688.28
  6. Step 6: Final answer
    x = 23,814.26

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.