Home / 20,713.40-28,585.25-11,760.68

Finding the Fourth Proportional to 20,713.40, 28,585.25 and 11,760.68

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Solution

The fourth proportional to 20,713.40, 28,585.25 and 11,760.68 is: 16,230.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,713.40 : 28,585.25 = 11,760.68 : x
  2. Step 2: Convert to fraction form
    20,713.40/28,585.25 = 11,760.68/x
  3. Step 3: Cross multiply
    20,713.40x = 28,585.25 × 11,760.68
  4. Step 4: Simplify right side
    20,713.40x = 336,181,864.45
  5. Step 5: Solve for x
    x = 336,181,864.45/20,713.40
  6. Step 6: Final answer
    x = 16,230.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.