Home / 15,134.06-20,882.75-8,419.77

Finding the Fourth Proportional to 15,134.06, 20,882.75 and 8,419.77

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Solution

The fourth proportional to 15,134.06, 20,882.75 and 8,419.77 is: 11,618.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,134.06 : 20,882.75 = 8,419.77 : x
  2. Step 2: Convert to fraction form
    15,134.06/20,882.75 = 8,419.77/x
  3. Step 3: Cross multiply
    15,134.06x = 20,882.75 × 8,419.77
  4. Step 4: Simplify right side
    15,134.06x = 175,827,909.87
  5. Step 5: Solve for x
    x = 175,827,909.87/15,134.06
  6. Step 6: Final answer
    x = 11,618.03

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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.