Home / 31,861.65-47,726.84-18,682.25

Finding the Fourth Proportional to 31,861.65, 47,726.84 and 18,682.25

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Solution

The fourth proportional to 31,861.65, 47,726.84 and 18,682.25 is: 27,984.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,861.65 : 47,726.84 = 18,682.25 : x
  2. Step 2: Convert to fraction form
    31,861.65/47,726.84 = 18,682.25/x
  3. Step 3: Cross multiply
    31,861.65x = 47,726.84 × 18,682.25
  4. Step 4: Simplify right side
    31,861.65x = 891,644,424.54
  5. Step 5: Solve for x
    x = 891,644,424.54/31,861.65
  6. Step 6: Final answer
    x = 27,984.88

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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.