Home / 17,612.68-24,328.78-13,128.64

Finding the Fourth Proportional to 17,612.68, 24,328.78 and 13,128.64

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Solution

The fourth proportional to 17,612.68, 24,328.78 and 13,128.64 is: 18,134.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,612.68 : 24,328.78 = 13,128.64 : x
  2. Step 2: Convert to fraction form
    17,612.68/24,328.78 = 13,128.64/x
  3. Step 3: Cross multiply
    17,612.68x = 24,328.78 × 13,128.64
  4. Step 4: Simplify right side
    17,612.68x = 319,403,672.62
  5. Step 5: Solve for x
    x = 319,403,672.62/17,612.68
  6. Step 6: Final answer
    x = 18,134.88

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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.