Home / 12,159.19-18,231.49-4,754.83

Finding the Fourth Proportional to 12,159.19, 18,231.49 and 4,754.83

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Solution

The fourth proportional to 12,159.19, 18,231.49 and 4,754.83 is: 7,129.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,159.19 : 18,231.49 = 4,754.83 : x
  2. Step 2: Convert to fraction form
    12,159.19/18,231.49 = 4,754.83/x
  3. Step 3: Cross multiply
    12,159.19x = 18,231.49 × 4,754.83
  4. Step 4: Simplify right side
    12,159.19x = 86,687,635.60
  5. Step 5: Solve for x
    x = 86,687,635.60/12,159.19
  6. Step 6: Final answer
    x = 7,129.39

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1.5x scale

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.