Home / 28,447.35-39,247.98-18,381.72

Finding the Fourth Proportional to 28,447.35, 39,247.98 and 18,381.72

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Solution

The fourth proportional to 28,447.35, 39,247.98 and 18,381.72 is: 25,360.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,447.35 : 39,247.98 = 18,381.72 : x
  2. Step 2: Convert to fraction form
    28,447.35/39,247.98 = 18,381.72/x
  3. Step 3: Cross multiply
    28,447.35x = 39,247.98 × 18,381.72
  4. Step 4: Simplify right side
    28,447.35x = 721,445,378.93
  5. Step 5: Solve for x
    x = 721,445,378.93/28,447.35
  6. Step 6: Final answer
    x = 25,360.72

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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.