Home / 15,254.66-21,051.43-8,540.30

Finding the Fourth Proportional to 15,254.66, 21,051.43 and 8,540.30

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Solution

The fourth proportional to 15,254.66, 21,051.43 and 8,540.30 is: 11,785.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,254.66 : 21,051.43 = 8,540.30 : x
  2. Step 2: Convert to fraction form
    15,254.66/21,051.43 = 8,540.30/x
  3. Step 3: Cross multiply
    15,254.66x = 21,051.43 × 8,540.30
  4. Step 4: Simplify right side
    15,254.66x = 179,785,401.02
  5. Step 5: Solve for x
    x = 179,785,401.02/15,254.66
  6. Step 6: Final answer
    x = 11,785.61

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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.