Home / 13,439.10-20,136.81-8,233.98

Finding the Fourth Proportional to 13,439.10, 20,136.81 and 8,233.98

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Solution

The fourth proportional to 13,439.10, 20,136.81 and 8,233.98 is: 12,337.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,439.10 : 20,136.81 = 8,233.98 : x
  2. Step 2: Convert to fraction form
    13,439.10/20,136.81 = 8,233.98/x
  3. Step 3: Cross multiply
    13,439.10x = 20,136.81 × 8,233.98
  4. Step 4: Simplify right side
    13,439.10x = 165,806,090.80
  5. Step 5: Solve for x
    x = 165,806,090.80/13,439.10
  6. Step 6: Final answer
    x = 12,337.59

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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.