Home / 31,781.24-47,687.34-13,066.90

Finding the Fourth Proportional to 31,781.24, 47,687.34 and 13,066.90

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Solution

The fourth proportional to 31,781.24, 47,687.34 and 13,066.90 is: 19,606.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,781.24 : 47,687.34 = 13,066.90 : x
  2. Step 2: Convert to fraction form
    31,781.24/47,687.34 = 13,066.90/x
  3. Step 3: Cross multiply
    31,781.24x = 47,687.34 × 13,066.90
  4. Step 4: Simplify right side
    31,781.24x = 623,125,703.05
  5. Step 5: Solve for x
    x = 623,125,703.05/31,781.24
  6. Step 6: Final answer
    x = 19,606.71

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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.