Home / 18,512.64-25,547.52-10,129.92

Finding the Fourth Proportional to 18,512.64, 25,547.52 and 10,129.92

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Solution

The fourth proportional to 18,512.64, 25,547.52 and 10,129.92 is: 13,979.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,512.64 : 25,547.52 = 10,129.92 : x
  2. Step 2: Convert to fraction form
    18,512.64/25,547.52 = 10,129.92/x
  3. Step 3: Cross multiply
    18,512.64x = 25,547.52 × 10,129.92
  4. Step 4: Simplify right side
    18,512.64x = 258,794,333.80
  5. Step 5: Solve for x
    x = 258,794,333.80/18,512.64
  6. Step 6: Final answer
    x = 13,979.33

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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.