Home / 28,447.55-39,248.25-18,381.92

Finding the Fourth Proportional to 28,447.55, 39,248.25 and 18,381.92

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Solution

The fourth proportional to 28,447.55, 39,248.25 and 18,381.92 is: 25,360.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,447.55 : 39,248.25 = 18,381.92 : x
  2. Step 2: Convert to fraction form
    28,447.55/39,248.25 = 18,381.92/x
  3. Step 3: Cross multiply
    28,447.55x = 39,248.25 × 18,381.92
  4. Step 4: Simplify right side
    28,447.55x = 721,457,995.40
  5. Step 5: Solve for x
    x = 721,457,995.40/28,447.55
  6. Step 6: Final answer
    x = 25,360.99

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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.