Home / 15,176.72-20,943.98-8,462.78

Finding the Fourth Proportional to 15,176.72, 20,943.98 and 8,462.78

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Solution

The fourth proportional to 15,176.72, 20,943.98 and 8,462.78 is: 11,678.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,176.72 : 20,943.98 = 8,462.78 : x
  2. Step 2: Convert to fraction form
    15,176.72/20,943.98 = 8,462.78/x
  3. Step 3: Cross multiply
    15,176.72x = 20,943.98 × 8,462.78
  4. Step 4: Simplify right side
    15,176.72x = 177,244,295.06
  5. Step 5: Solve for x
    x = 177,244,295.06/15,176.72
  6. Step 6: Final answer
    x = 11,678.70

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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.