Home / 15,040.05-20,754.74-8,325.69

Finding the Fourth Proportional to 15,040.05, 20,754.74 and 8,325.69

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Solution

The fourth proportional to 15,040.05, 20,754.74 and 8,325.69 is: 11,489.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,040.05 : 20,754.74 = 8,325.69 : x
  2. Step 2: Convert to fraction form
    15,040.05/20,754.74 = 8,325.69/x
  3. Step 3: Cross multiply
    15,040.05x = 20,754.74 × 8,325.69
  4. Step 4: Simplify right side
    15,040.05x = 172,797,489.64
  5. Step 5: Solve for x
    x = 172,797,489.64/15,040.05
  6. Step 6: Final answer
    x = 11,489.16

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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.