Home / 13,082.20-18,053.40-7,113.88

Finding the Fourth Proportional to 13,082.20, 18,053.40 and 7,113.88

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Solution

The fourth proportional to 13,082.20, 18,053.40 and 7,113.88 is: 9,817.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,082.20 : 18,053.40 = 7,113.88 : x
  2. Step 2: Convert to fraction form
    13,082.20/18,053.40 = 7,113.88/x
  3. Step 3: Cross multiply
    13,082.20x = 18,053.40 × 7,113.88
  4. Step 4: Simplify right side
    13,082.20x = 128,429,721.19
  5. Step 5: Solve for x
    x = 128,429,721.19/13,082.20
  6. Step 6: Final answer
    x = 9,817.13

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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.