Home / 13,689.08-20,536.38-4,330.55

Finding the Fourth Proportional to 13,689.08, 20,536.38 and 4,330.55

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Solution

The fourth proportional to 13,689.08, 20,536.38 and 4,330.55 is: 6,496.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,689.08 : 20,536.38 = 4,330.55 : x
  2. Step 2: Convert to fraction form
    13,689.08/20,536.38 = 4,330.55/x
  3. Step 3: Cross multiply
    13,689.08x = 20,536.38 × 4,330.55
  4. Step 4: Simplify right side
    13,689.08x = 88,933,820.41
  5. Step 5: Solve for x
    x = 88,933,820.41/13,689.08
  6. Step 6: Final answer
    x = 6,496.70

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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.