Home / 13,160.64-18,156.96-8,122.56

Finding the Fourth Proportional to 13,160.64, 18,156.96 and 8,122.56

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Solution

The fourth proportional to 13,160.64, 18,156.96 and 8,122.56 is: 11,206.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,160.64 : 18,156.96 = 8,122.56 : x
  2. Step 2: Convert to fraction form
    13,160.64/18,156.96 = 8,122.56/x
  3. Step 3: Cross multiply
    13,160.64x = 18,156.96 × 8,122.56
  4. Step 4: Simplify right side
    13,160.64x = 147,480,997.02
  5. Step 5: Solve for x
    x = 147,480,997.02/13,160.64
  6. Step 6: Final answer
    x = 11,206.22

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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.