Home / 15,454.99-21,327.78-8,381.41

Finding the Fourth Proportional to 15,454.99, 21,327.78 and 8,381.41

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Solution

The fourth proportional to 15,454.99, 21,327.78 and 8,381.41 is: 11,566.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,454.99 : 21,327.78 = 8,381.41 : x
  2. Step 2: Convert to fraction form
    15,454.99/21,327.78 = 8,381.41/x
  3. Step 3: Cross multiply
    15,454.99x = 21,327.78 × 8,381.41
  4. Step 4: Simplify right side
    15,454.99x = 178,756,868.57
  5. Step 5: Solve for x
    x = 178,756,868.57/15,454.99
  6. Step 6: Final answer
    x = 11,566.29

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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.