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Finding the Fourth Proportional to 13,665.52, 20,498.30 and 10,550.08

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Solution

The fourth proportional to 13,665.52, 20,498.30 and 10,550.08 is: 15,825.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,665.52 : 20,498.30 = 10,550.08 : x
  2. Step 2: Convert to fraction form
    13,665.52/20,498.30 = 10,550.08/x
  3. Step 3: Cross multiply
    13,665.52x = 20,498.30 × 10,550.08
  4. Step 4: Simplify right side
    13,665.52x = 216,258,704.86
  5. Step 5: Solve for x
    x = 216,258,704.86/13,665.52
  6. Step 6: Final answer
    x = 15,825.14

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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.