Home / 30,519.76-42,115.39-17,088.75

Finding the Fourth Proportional to 30,519.76, 42,115.39 and 17,088.75

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Solution

The fourth proportional to 30,519.76, 42,115.39 and 17,088.75 is: 23,581.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,519.76 : 42,115.39 = 17,088.75 : x
  2. Step 2: Convert to fraction form
    30,519.76/42,115.39 = 17,088.75/x
  3. Step 3: Cross multiply
    30,519.76x = 42,115.39 × 17,088.75
  4. Step 4: Simplify right side
    30,519.76x = 719,699,370.86
  5. Step 5: Solve for x
    x = 719,699,370.86/30,519.76
  6. Step 6: Final answer
    x = 23,581.42

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Half scale
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Double scale
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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.