Home / 15,625.08-21,540.15-11,141.06

Finding the Fourth Proportional to 15,625.08, 21,540.15 and 11,141.06

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Solution

The fourth proportional to 15,625.08, 21,540.15 and 11,141.06 is: 15,358.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,625.08 : 21,540.15 = 11,141.06 : x
  2. Step 2: Convert to fraction form
    15,625.08/21,540.15 = 11,141.06/x
  3. Step 3: Cross multiply
    15,625.08x = 21,540.15 × 11,141.06
  4. Step 4: Simplify right side
    15,625.08x = 239,979,995.86
  5. Step 5: Solve for x
    x = 239,979,995.86/15,625.08
  6. Step 6: Final answer
    x = 15,358.64

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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.