Home / 30,812.76-42,520.91-17,383.68

Finding the Fourth Proportional to 30,812.76, 42,520.91 and 17,383.68

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Solution

The fourth proportional to 30,812.76, 42,520.91 and 17,383.68 is: 23,989.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,812.76 : 42,520.91 = 17,383.68 : x
  2. Step 2: Convert to fraction form
    30,812.76/42,520.91 = 17,383.68/x
  3. Step 3: Cross multiply
    30,812.76x = 42,520.91 × 17,383.68
  4. Step 4: Simplify right side
    30,812.76x = 739,169,805.83
  5. Step 5: Solve for x
    x = 739,169,805.83/30,812.76
  6. Step 6: Final answer
    x = 23,989.08

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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.