Home / 10,886.72-15,023.22-6,171.28

Finding the Fourth Proportional to 10,886.72, 15,023.22 and 6,171.28

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Solution

The fourth proportional to 10,886.72, 15,023.22 and 6,171.28 is: 8,516.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,886.72 : 15,023.22 = 6,171.28 : x
  2. Step 2: Convert to fraction form
    10,886.72/15,023.22 = 6,171.28/x
  3. Step 3: Cross multiply
    10,886.72x = 15,023.22 × 6,171.28
  4. Step 4: Simplify right side
    10,886.72x = 92,712,497.12
  5. Step 5: Solve for x
    x = 92,712,497.12/10,886.72
  6. Step 6: Final answer
    x = 8,516.11

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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.