Home / 17,720.64-24,470.28-13,236.75

Finding the Fourth Proportional to 17,720.64, 24,470.28 and 13,236.75

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Solution

The fourth proportional to 17,720.64, 24,470.28 and 13,236.75 is: 18,278.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,720.64 : 24,470.28 = 13,236.75 : x
  2. Step 2: Convert to fraction form
    17,720.64/24,470.28 = 13,236.75/x
  3. Step 3: Cross multiply
    17,720.64x = 24,470.28 × 13,236.75
  4. Step 4: Simplify right side
    17,720.64x = 323,906,978.79
  5. Step 5: Solve for x
    x = 323,906,978.79/17,720.64
  6. Step 6: Final answer
    x = 18,278.51

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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.