Home / 15,254.91-21,051.77-8,540.55

Finding the Fourth Proportional to 15,254.91, 21,051.77 and 8,540.55

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Solution

The fourth proportional to 15,254.91, 21,051.77 and 8,540.55 is: 11,785.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,254.91 : 21,051.77 = 8,540.55 : x
  2. Step 2: Convert to fraction form
    15,254.91/21,051.77 = 8,540.55/x
  3. Step 3: Cross multiply
    15,254.91x = 21,051.77 × 8,540.55
  4. Step 4: Simplify right side
    15,254.91x = 179,793,694.27
  5. Step 5: Solve for x
    x = 179,793,694.27/15,254.91
  6. Step 6: Final answer
    x = 11,785.96

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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.