Home / 15,176.91-20,940.66-9,124.39

Finding the Fourth Proportional to 15,176.91, 20,940.66 and 9,124.39

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Solution

The fourth proportional to 15,176.91, 20,940.66 and 9,124.39 is: 12,589.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,176.91 : 20,940.66 = 9,124.39 : x
  2. Step 2: Convert to fraction form
    15,176.91/20,940.66 = 9,124.39/x
  3. Step 3: Cross multiply
    15,176.91x = 20,940.66 × 9,124.39
  4. Step 4: Simplify right side
    15,176.91x = 191,070,774.87
  5. Step 5: Solve for x
    x = 191,070,774.87/15,176.91
  6. Step 6: Final answer
    x = 12,589.57

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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.