Home / 12,551.40-18,829.26-5,159.88

Finding the Fourth Proportional to 12,551.40, 18,829.26 and 5,159.88

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Solution

The fourth proportional to 12,551.40, 18,829.26 and 5,159.88 is: 7,740.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,551.40 : 18,829.26 = 5,159.88 : x
  2. Step 2: Convert to fraction form
    12,551.40/18,829.26 = 5,159.88/x
  3. Step 3: Cross multiply
    12,551.40x = 18,829.26 × 5,159.88
  4. Step 4: Simplify right side
    12,551.40x = 97,156,722.09
  5. Step 5: Solve for x
    x = 97,156,722.09/12,551.40
  6. Step 6: Final answer
    x = 7,740.71

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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.