Home / 20,142.50-30,215.84-9,610.74

Finding the Fourth Proportional to 20,142.50, 30,215.84 and 9,610.74

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Solution

The fourth proportional to 20,142.50, 30,215.84 and 9,610.74 is: 14,417.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142.50 : 30,215.84 = 9,610.74 : x
  2. Step 2: Convert to fraction form
    20,142.50/30,215.84 = 9,610.74/x
  3. Step 3: Cross multiply
    20,142.50x = 30,215.84 × 9,610.74
  4. Step 4: Simplify right side
    20,142.50x = 290,396,534.07
  5. Step 5: Solve for x
    x = 290,396,534.07/20,142.50
  6. Step 6: Final answer
    x = 14,417.11

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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.