Home / 20,335.60-30,508.40-7,008.80

Finding the Fourth Proportional to 20,335.60, 30,508.40 and 7,008.80

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Solution

The fourth proportional to 20,335.60, 30,508.40 and 7,008.80 is: 10,514.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,335.60 : 30,508.40 = 7,008.80 : x
  2. Step 2: Convert to fraction form
    20,335.60/30,508.40 = 7,008.80/x
  3. Step 3: Cross multiply
    20,335.60x = 30,508.40 × 7,008.80
  4. Step 4: Simplify right side
    20,335.60x = 213,827,273.92
  5. Step 5: Solve for x
    x = 213,827,273.92/20,335.60
  6. Step 6: Final answer
    x = 10,514.92

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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.