Home / 15,294.42-21,104.87-8,578.76

Finding the Fourth Proportional to 15,294.42, 21,104.87 and 8,578.76

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Solution

The fourth proportional to 15,294.42, 21,104.87 and 8,578.76 is: 11,837.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,294.42 : 21,104.87 = 8,578.76 : x
  2. Step 2: Convert to fraction form
    15,294.42/21,104.87 = 8,578.76/x
  3. Step 3: Cross multiply
    15,294.42x = 21,104.87 × 8,578.76
  4. Step 4: Simplify right side
    15,294.42x = 181,053,466.14
  5. Step 5: Solve for x
    x = 181,053,466.14/15,294.42
  6. Step 6: Final answer
    x = 11,837.88

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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.