Home / 18,585.72-27,876.51-5,438.21

Finding the Fourth Proportional to 18,585.72, 27,876.51 and 5,438.21

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Solution

The fourth proportional to 18,585.72, 27,876.51 and 5,438.21 is: 8,156.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,585.72 : 27,876.51 = 5,438.21 : x
  2. Step 2: Convert to fraction form
    18,585.72/27,876.51 = 5,438.21/x
  3. Step 3: Cross multiply
    18,585.72x = 27,876.51 × 5,438.21
  4. Step 4: Simplify right side
    18,585.72x = 151,598,176.06
  5. Step 5: Solve for x
    x = 151,598,176.06/18,585.72
  6. Step 6: Final answer
    x = 8,156.70

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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.