Home / 18,135.72-27,150.12-17,688.60

Finding the Fourth Proportional to 18,135.72, 27,150.12 and 17,688.60

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Solution

The fourth proportional to 18,135.72, 27,150.12 and 17,688.60 is: 26,480.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,135.72 : 27,150.12 = 17,688.60 : x
  2. Step 2: Convert to fraction form
    18,135.72/27,150.12 = 17,688.60/x
  3. Step 3: Cross multiply
    18,135.72x = 27,150.12 × 17,688.60
  4. Step 4: Simplify right side
    18,135.72x = 480,247,612.63
  5. Step 5: Solve for x
    x = 480,247,612.63/18,135.72
  6. Step 6: Final answer
    x = 26,480.76

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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.