Home / 13,381.68-18,466.11-7,331.90

Finding the Fourth Proportional to 13,381.68, 18,466.11 and 7,331.90

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Solution

The fourth proportional to 13,381.68, 18,466.11 and 7,331.90 is: 10,117.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.68 : 18,466.11 = 7,331.90 : x
  2. Step 2: Convert to fraction form
    13,381.68/18,466.11 = 7,331.90/x
  3. Step 3: Cross multiply
    13,381.68x = 18,466.11 × 7,331.90
  4. Step 4: Simplify right side
    13,381.68x = 135,391,579.58
  5. Step 5: Solve for x
    x = 135,391,579.58/13,381.68
  6. Step 6: Final answer
    x = 10,117.68

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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.