Home / 12,658.28-18,991.26-8,967.65

Finding the Fourth Proportional to 12,658.28, 18,991.26 and 8,967.65

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Solution

The fourth proportional to 12,658.28, 18,991.26 and 8,967.65 is: 13,454.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,658.28 : 18,991.26 = 8,967.65 : x
  2. Step 2: Convert to fraction form
    12,658.28/18,991.26 = 8,967.65/x
  3. Step 3: Cross multiply
    12,658.28x = 18,991.26 × 8,967.65
  4. Step 4: Simplify right side
    12,658.28x = 170,306,877.78
  5. Step 5: Solve for x
    x = 170,306,877.78/12,658.28
  6. Step 6: Final answer
    x = 13,454.19

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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.