Home / 30,439.38-42,005.54-17,010.75

Finding the Fourth Proportional to 30,439.38, 42,005.54 and 17,010.75

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Solution

The fourth proportional to 30,439.38, 42,005.54 and 17,010.75 is: 23,474.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,439.38 : 42,005.54 = 17,010.75 : x
  2. Step 2: Convert to fraction form
    30,439.38/42,005.54 = 17,010.75/x
  3. Step 3: Cross multiply
    30,439.38x = 42,005.54 × 17,010.75
  4. Step 4: Simplify right side
    30,439.38x = 714,545,654.50
  5. Step 5: Solve for x
    x = 714,545,654.50/30,439.38
  6. Step 6: Final answer
    x = 23,474.38

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Half scale
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Double scale
Find fourth proportional to 30,440.38, 42,006.91 and 17,011.75
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.