Home / 20,139.60-30,210.02-9,610.76

Finding the Fourth Proportional to 20,139.60, 30,210.02 and 9,610.76

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Solution

The fourth proportional to 20,139.60, 30,210.02 and 9,610.76 is: 14,416.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139.60 : 30,210.02 = 9,610.76 : x
  2. Step 2: Convert to fraction form
    20,139.60/30,210.02 = 9,610.76/x
  3. Step 3: Cross multiply
    20,139.60x = 30,210.02 × 9,610.76
  4. Step 4: Simplify right side
    20,139.60x = 290,341,251.82
  5. Step 5: Solve for x
    x = 290,341,251.82/20,139.60
  6. Step 6: Final answer
    x = 14,416.44

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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.