Home / 31,724.49-47,587.07-12,999.72

Finding the Fourth Proportional to 31,724.49, 47,587.07 and 12,999.72

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Solution

The fourth proportional to 31,724.49, 47,587.07 and 12,999.72 is: 19,499.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,724.49 : 47,587.07 = 12,999.72 : x
  2. Step 2: Convert to fraction form
    31,724.49/47,587.07 = 12,999.72/x
  3. Step 3: Cross multiply
    31,724.49x = 47,587.07 × 12,999.72
  4. Step 4: Simplify right side
    31,724.49x = 618,618,585.62
  5. Step 5: Solve for x
    x = 618,618,585.62/31,724.49
  6. Step 6: Final answer
    x = 19,499.72

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.