Home / 15,507.30-21,399.63-8,793.57

Finding the Fourth Proportional to 15,507.30, 21,399.63 and 8,793.57

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Solution

The fourth proportional to 15,507.30, 21,399.63 and 8,793.57 is: 12,134.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,507.30 : 21,399.63 = 8,793.57 : x
  2. Step 2: Convert to fraction form
    15,507.30/21,399.63 = 8,793.57/x
  3. Step 3: Cross multiply
    15,507.30x = 21,399.63 × 8,793.57
  4. Step 4: Simplify right side
    15,507.30x = 188,179,144.38
  5. Step 5: Solve for x
    x = 188,179,144.38/15,507.30
  6. Step 6: Final answer
    x = 12,134.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.