Home / 12,002.41-18,010.23-5,428.09

Finding the Fourth Proportional to 12,002.41, 18,010.23 and 5,428.09

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Solution

The fourth proportional to 12,002.41, 18,010.23 and 5,428.09 is: 8,145.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,002.41 : 18,010.23 = 5,428.09 : x
  2. Step 2: Convert to fraction form
    12,002.41/18,010.23 = 5,428.09/x
  3. Step 3: Cross multiply
    12,002.41x = 18,010.23 × 5,428.09
  4. Step 4: Simplify right side
    12,002.41x = 97,761,149.36
  5. Step 5: Solve for x
    x = 97,761,149.36/12,002.41
  6. Step 6: Final answer
    x = 8,145.13

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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.