Home / 12,321.60-18,465.76-11,534.24

Finding the Fourth Proportional to 12,321.60, 18,465.76 and 11,534.24

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Solution

The fourth proportional to 12,321.60, 18,465.76 and 11,534.24 is: 17,285.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,321.60 : 18,465.76 = 11,534.24 : x
  2. Step 2: Convert to fraction form
    12,321.60/18,465.76 = 11,534.24/x
  3. Step 3: Cross multiply
    12,321.60x = 18,465.76 × 11,534.24
  4. Step 4: Simplify right side
    12,321.60x = 212,988,507.62
  5. Step 5: Solve for x
    x = 212,988,507.62/12,321.60
  6. Step 6: Final answer
    x = 17,285.78

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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.