Home / 13,632.48-18,816.24-8,330.40

Finding the Fourth Proportional to 13,632.48, 18,816.24 and 8,330.40

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Solution

The fourth proportional to 13,632.48, 18,816.24 and 8,330.40 is: 11,498.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,632.48 : 18,816.24 = 8,330.40 : x
  2. Step 2: Convert to fraction form
    13,632.48/18,816.24 = 8,330.40/x
  3. Step 3: Cross multiply
    13,632.48x = 18,816.24 × 8,330.40
  4. Step 4: Simplify right side
    13,632.48x = 156,746,805.70
  5. Step 5: Solve for x
    x = 156,746,805.70/13,632.48
  6. Step 6: Final answer
    x = 11,498.04

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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.