Home / 15,160.05-20,912.45-8,871.21

Finding the Fourth Proportional to 15,160.05, 20,912.45 and 8,871.21

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Solution

The fourth proportional to 15,160.05, 20,912.45 and 8,871.21 is: 12,237.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,160.05 : 20,912.45 = 8,871.21 : x
  2. Step 2: Convert to fraction form
    15,160.05/20,912.45 = 8,871.21/x
  3. Step 3: Cross multiply
    15,160.05x = 20,912.45 × 8,871.21
  4. Step 4: Simplify right side
    15,160.05x = 185,518,691.21
  5. Step 5: Solve for x
    x = 185,518,691.21/15,160.05
  6. Step 6: Final answer
    x = 12,237.34

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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.