Home / 20,601.60-30,951.72-13,220.52

Finding the Fourth Proportional to 20,601.60, 30,951.72 and 13,220.52

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Solution

The fourth proportional to 20,601.60, 30,951.72 and 13,220.52 is: 19,862.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.60 : 30,951.72 = 13,220.52 : x
  2. Step 2: Convert to fraction form
    20,601.60/30,951.72 = 13,220.52/x
  3. Step 3: Cross multiply
    20,601.60x = 30,951.72 × 13,220.52
  4. Step 4: Simplify right side
    20,601.60x = 409,197,833.29
  5. Step 5: Solve for x
    x = 409,197,833.29/20,601.60
  6. Step 6: Final answer
    x = 19,862.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.