Home / 15,423.91-21,285.14-8,350.48

Finding the Fourth Proportional to 15,423.91, 21,285.14 and 8,350.48

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Solution

The fourth proportional to 15,423.91, 21,285.14 and 8,350.48 is: 11,523.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,423.91 : 21,285.14 = 8,350.48 : x
  2. Step 2: Convert to fraction form
    15,423.91/21,285.14 = 8,350.48/x
  3. Step 3: Cross multiply
    15,423.91x = 21,285.14 × 8,350.48
  4. Step 4: Simplify right side
    15,423.91x = 177,741,135.87
  5. Step 5: Solve for x
    x = 177,741,135.87/15,423.91
  6. Step 6: Final answer
    x = 11,523.74

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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.