Home / 18,339.46-27,519.40-9,905.79

Finding the Fourth Proportional to 18,339.46, 27,519.40 and 9,905.79

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Solution

The fourth proportional to 18,339.46, 27,519.40 and 9,905.79 is: 14,864.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,339.46 : 27,519.40 = 9,905.79 : x
  2. Step 2: Convert to fraction form
    18,339.46/27,519.40 = 9,905.79/x
  3. Step 3: Cross multiply
    18,339.46x = 27,519.40 × 9,905.79
  4. Step 4: Simplify right side
    18,339.46x = 272,601,259.73
  5. Step 5: Solve for x
    x = 272,601,259.73/18,339.46
  6. Step 6: Final answer
    x = 14,864.20

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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.