Home / 28,470.22-39,256.95-18,385.42

Finding the Fourth Proportional to 28,470.22, 39,256.95 and 18,385.42

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Solution

The fourth proportional to 28,470.22, 39,256.95 and 18,385.42 is: 25,351.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,470.22 : 39,256.95 = 18,385.42 : x
  2. Step 2: Convert to fraction form
    28,470.22/39,256.95 = 18,385.42/x
  3. Step 3: Cross multiply
    28,470.22x = 39,256.95 × 18,385.42
  4. Step 4: Simplify right side
    28,470.22x = 721,755,513.67
  5. Step 5: Solve for x
    x = 721,755,513.67/28,470.22
  6. Step 6: Final answer
    x = 25,351.24

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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.