Home / 31,146.12-42,982.74-16,999.92

Finding the Fourth Proportional to 31,146.12, 42,982.74 and 16,999.92

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Solution

The fourth proportional to 31,146.12, 42,982.74 and 16,999.92 is: 23,460.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,146.12 : 42,982.74 = 16,999.92 : x
  2. Step 2: Convert to fraction form
    31,146.12/42,982.74 = 16,999.92/x
  3. Step 3: Cross multiply
    31,146.12x = 42,982.74 × 16,999.92
  4. Step 4: Simplify right side
    31,146.12x = 730,703,141.38
  5. Step 5: Solve for x
    x = 730,703,141.38/31,146.12
  6. Step 6: Final answer
    x = 23,460.49

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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.