Home / 8,686.28-13,029.66-7,445.96

Finding the Fourth Proportional to 8,686.28, 13,029.66 and 7,445.96

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Solution

The fourth proportional to 8,686.28, 13,029.66 and 7,445.96 is: 11,169.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686.28 : 13,029.66 = 7,445.96 : x
  2. Step 2: Convert to fraction form
    8,686.28/13,029.66 = 7,445.96/x
  3. Step 3: Cross multiply
    8,686.28x = 13,029.66 × 7,445.96
  4. Step 4: Simplify right side
    8,686.28x = 97,018,327.17
  5. Step 5: Solve for x
    x = 97,018,327.17/8,686.28
  6. Step 6: Final answer
    x = 11,169.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.