Home / 13,134.24-18,122.40-8,416.80

Finding the Fourth Proportional to 13,134.24, 18,122.40 and 8,416.80

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Solution

The fourth proportional to 13,134.24, 18,122.40 and 8,416.80 is: 11,613.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,134.24 : 18,122.40 = 8,416.80 : x
  2. Step 2: Convert to fraction form
    13,134.24/18,122.40 = 8,416.80/x
  3. Step 3: Cross multiply
    13,134.24x = 18,122.40 × 8,416.80
  4. Step 4: Simplify right side
    13,134.24x = 152,532,616.32
  5. Step 5: Solve for x
    x = 152,532,616.32/13,134.24
  6. Step 6: Final answer
    x = 11,613.36

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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.