Home / 13,381.50-18,386.57-12,517.64

Finding the Fourth Proportional to 13,381.50, 18,386.57 and 12,517.64

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Solution

The fourth proportional to 13,381.50, 18,386.57 and 12,517.64 is: 17,199.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.50 : 18,386.57 = 12,517.64 : x
  2. Step 2: Convert to fraction form
    13,381.50/18,386.57 = 12,517.64/x
  3. Step 3: Cross multiply
    13,381.50x = 18,386.57 × 12,517.64
  4. Step 4: Simplify right side
    13,381.50x = 230,156,437.20
  5. Step 5: Solve for x
    x = 230,156,437.20/13,381.50
  6. Step 6: Final answer
    x = 17,199.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.