Home / 15,134.04-20,884.79-8,419.49

Finding the Fourth Proportional to 15,134.04, 20,884.79 and 8,419.49

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Solution

The fourth proportional to 15,134.04, 20,884.79 and 8,419.49 is: 11,618.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,134.04 : 20,884.79 = 8,419.49 : x
  2. Step 2: Convert to fraction form
    15,134.04/20,884.79 = 8,419.49/x
  3. Step 3: Cross multiply
    15,134.04x = 20,884.79 × 8,419.49
  4. Step 4: Simplify right side
    15,134.04x = 175,839,345.62
  5. Step 5: Solve for x
    x = 175,839,345.62/15,134.04
  6. Step 6: Final answer
    x = 11,618.80

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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.