Home / 13,632.08-20,439.86-8,891.78

Finding the Fourth Proportional to 13,632.08, 20,439.86 and 8,891.78

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Solution

The fourth proportional to 13,632.08, 20,439.86 and 8,891.78 is: 13,332.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,632.08 : 20,439.86 = 8,891.78 : x
  2. Step 2: Convert to fraction form
    13,632.08/20,439.86 = 8,891.78/x
  3. Step 3: Cross multiply
    13,632.08x = 20,439.86 × 8,891.78
  4. Step 4: Simplify right side
    13,632.08x = 181,746,591.69
  5. Step 5: Solve for x
    x = 181,746,591.69/13,632.08
  6. Step 6: Final answer
    x = 13,332.28

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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.