Home / 13,531.19-18,675.50-8,499.87

Finding the Fourth Proportional to 13,531.19, 18,675.50 and 8,499.87

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Solution

The fourth proportional to 13,531.19, 18,675.50 and 8,499.87 is: 11,731.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,531.19 : 18,675.50 = 8,499.87 : x
  2. Step 2: Convert to fraction form
    13,531.19/18,675.50 = 8,499.87/x
  3. Step 3: Cross multiply
    13,531.19x = 18,675.50 × 8,499.87
  4. Step 4: Simplify right side
    13,531.19x = 158,739,279.69
  5. Step 5: Solve for x
    x = 158,739,279.69/13,531.19
  6. Step 6: Final answer
    x = 11,731.37

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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.