Home / 18,417.60-27,612.90-7,318.80

Finding the Fourth Proportional to 18,417.60, 27,612.90 and 7,318.80

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Solution

The fourth proportional to 18,417.60, 27,612.90 and 7,318.80 is: 10,972.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,417.60 : 27,612.90 = 7,318.80 : x
  2. Step 2: Convert to fraction form
    18,417.60/27,612.90 = 7,318.80/x
  3. Step 3: Cross multiply
    18,417.60x = 27,612.90 × 7,318.80
  4. Step 4: Simplify right side
    18,417.60x = 202,093,292.52
  5. Step 5: Solve for x
    x = 202,093,292.52/18,417.60
  6. Step 6: Final answer
    x = 10,972.84

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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.