Home / 28,446.03-39,255.20-15,699.30

Finding the Fourth Proportional to 28,446.03, 39,255.20 and 15,699.30

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Solution

The fourth proportional to 28,446.03, 39,255.20 and 15,699.30 is: 21,664.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,446.03 : 39,255.20 = 15,699.30 : x
  2. Step 2: Convert to fraction form
    28,446.03/39,255.20 = 15,699.30/x
  3. Step 3: Cross multiply
    28,446.03x = 39,255.20 × 15,699.30
  4. Step 4: Simplify right side
    28,446.03x = 616,279,082.86
  5. Step 5: Solve for x
    x = 616,279,082.86/28,446.03
  6. Step 6: Final answer
    x = 21,664.85

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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.