Home / 13,082.05-18,053.13-7,113.72

Finding the Fourth Proportional to 13,082.05, 18,053.13 and 7,113.72

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Solution

The fourth proportional to 13,082.05, 18,053.13 and 7,113.72 is: 9,816.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,082.05 : 18,053.13 = 7,113.72 : x
  2. Step 2: Convert to fraction form
    13,082.05/18,053.13 = 7,113.72/x
  3. Step 3: Cross multiply
    13,082.05x = 18,053.13 × 7,113.72
  4. Step 4: Simplify right side
    13,082.05x = 128,424,938.62
  5. Step 5: Solve for x
    x = 128,424,938.62/13,082.05
  6. Step 6: Final answer
    x = 9,816.88

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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.