Home / 18,318.20-27,479.74-8,459.70

Finding the Fourth Proportional to 18,318.20, 27,479.74 and 8,459.70

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Solution

The fourth proportional to 18,318.20, 27,479.74 and 8,459.70 is: 12,690.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,318.20 : 27,479.74 = 8,459.70 : x
  2. Step 2: Convert to fraction form
    18,318.20/27,479.74 = 8,459.70/x
  3. Step 3: Cross multiply
    18,318.20x = 27,479.74 × 8,459.70
  4. Step 4: Simplify right side
    18,318.20x = 232,470,356.48
  5. Step 5: Solve for x
    x = 232,470,356.48/18,318.20
  6. Step 6: Final answer
    x = 12,690.68

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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.