Home / 15,578.96-21,498.90-8,505.42

Finding the Fourth Proportional to 15,578.96, 21,498.90 and 8,505.42

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Solution

The fourth proportional to 15,578.96, 21,498.90 and 8,505.42 is: 11,737.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,578.96 : 21,498.90 = 8,505.42 : x
  2. Step 2: Convert to fraction form
    15,578.96/21,498.90 = 8,505.42/x
  3. Step 3: Cross multiply
    15,578.96x = 21,498.90 × 8,505.42
  4. Step 4: Simplify right side
    15,578.96x = 182,857,174.04
  5. Step 5: Solve for x
    x = 182,857,174.04/15,578.96
  6. Step 6: Final answer
    x = 11,737.44

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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.