Home / 20,601.68-28,430.26-11,170.24

Finding the Fourth Proportional to 20,601.68, 28,430.26 and 11,170.24

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Solution

The fourth proportional to 20,601.68, 28,430.26 and 11,170.24 is: 15,414.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.68 : 28,430.26 = 11,170.24 : x
  2. Step 2: Convert to fraction form
    20,601.68/28,430.26 = 11,170.24/x
  3. Step 3: Cross multiply
    20,601.68x = 28,430.26 × 11,170.24
  4. Step 4: Simplify right side
    20,601.68x = 317,572,827.46
  5. Step 5: Solve for x
    x = 317,572,827.46/20,601.68
  6. Step 6: Final answer
    x = 15,414.90

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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.