Home / 13,711.72-18,922.19-7,424.10

Finding the Fourth Proportional to 13,711.72, 18,922.19 and 7,424.10

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Solution

The fourth proportional to 13,711.72, 18,922.19 and 7,424.10 is: 10,245.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,711.72 : 18,922.19 = 7,424.10 : x
  2. Step 2: Convert to fraction form
    13,711.72/18,922.19 = 7,424.10/x
  3. Step 3: Cross multiply
    13,711.72x = 18,922.19 × 7,424.10
  4. Step 4: Simplify right side
    13,711.72x = 140,480,136.17
  5. Step 5: Solve for x
    x = 140,480,136.17/13,711.72
  6. Step 6: Final answer
    x = 10,245.26

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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.