Home / 31,586.52-47,426.40-21,121.80

Finding the Fourth Proportional to 31,586.52, 47,426.40 and 21,121.80

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Solution

The fourth proportional to 31,586.52, 47,426.40 and 21,121.80 is: 31,713.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,586.52 : 47,426.40 = 21,121.80 : x
  2. Step 2: Convert to fraction form
    31,586.52/47,426.40 = 21,121.80/x
  3. Step 3: Cross multiply
    31,586.52x = 47,426.40 × 21,121.80
  4. Step 4: Simplify right side
    31,586.52x = 1,001,730,935.52
  5. Step 5: Solve for x
    x = 1,001,730,935.52/31,586.52
  6. Step 6: Final answer
    x = 31,713.87

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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.