Home / 12,013.60-18,010.80-5,082.40

Finding the Fourth Proportional to 12,013.60, 18,010.80 and 5,082.40

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Solution

The fourth proportional to 12,013.60, 18,010.80 and 5,082.40 is: 7,619.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,013.60 : 18,010.80 = 5,082.40 : x
  2. Step 2: Convert to fraction form
    12,013.60/18,010.80 = 5,082.40/x
  3. Step 3: Cross multiply
    12,013.60x = 18,010.80 × 5,082.40
  4. Step 4: Simplify right side
    12,013.60x = 91,538,089.92
  5. Step 5: Solve for x
    x = 91,538,089.92/12,013.60
  6. Step 6: Final answer
    x = 7,619.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.