Home / 15,475.38-21,356.04-8,401.80

Finding the Fourth Proportional to 15,475.38, 21,356.04 and 8,401.80

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Solution

The fourth proportional to 15,475.38, 21,356.04 and 8,401.80 is: 11,594.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,475.38 : 21,356.04 = 8,401.80 : x
  2. Step 2: Convert to fraction form
    15,475.38/21,356.04 = 8,401.80/x
  3. Step 3: Cross multiply
    15,475.38x = 21,356.04 × 8,401.80
  4. Step 4: Simplify right side
    15,475.38x = 179,429,176.87
  5. Step 5: Solve for x
    x = 179,429,176.87/15,475.38
  6. Step 6: Final answer
    x = 11,594.49

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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.