Home / 28,447.56-39,240.69-18,381.91

Finding the Fourth Proportional to 28,447.56, 39,240.69 and 18,381.91

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Solution

The fourth proportional to 28,447.56, 39,240.69 and 18,381.91 is: 25,356.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,447.56 : 39,240.69 = 18,381.91 : x
  2. Step 2: Convert to fraction form
    28,447.56/39,240.69 = 18,381.91/x
  3. Step 3: Cross multiply
    28,447.56x = 39,240.69 × 18,381.91
  4. Step 4: Simplify right side
    28,447.56x = 721,318,831.92
  5. Step 5: Solve for x
    x = 721,318,831.92/28,447.56
  6. Step 6: Final answer
    x = 25,356.09

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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.