Home / 20,331.60-30,502.40-7,004.80

Finding the Fourth Proportional to 20,331.60, 30,502.40 and 7,004.80

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Solution

The fourth proportional to 20,331.60, 30,502.40 and 7,004.80 is: 10,508.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,331.60 : 30,502.40 = 7,004.80 : x
  2. Step 2: Convert to fraction form
    20,331.60/30,502.40 = 7,004.80/x
  3. Step 3: Cross multiply
    20,331.60x = 30,502.40 × 7,004.80
  4. Step 4: Simplify right side
    20,331.60x = 213,663,211.52
  5. Step 5: Solve for x
    x = 213,663,211.52/20,331.60
  6. Step 6: Final answer
    x = 10,508.92

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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.