Home / 15,378.43-21,222.24-8,304.85

Finding the Fourth Proportional to 15,378.43, 21,222.24 and 8,304.85

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Solution

The fourth proportional to 15,378.43, 21,222.24 and 8,304.85 is: 11,460.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,378.43 : 21,222.24 = 8,304.85 : x
  2. Step 2: Convert to fraction form
    15,378.43/21,222.24 = 8,304.85/x
  3. Step 3: Cross multiply
    15,378.43x = 21,222.24 × 8,304.85
  4. Step 4: Simplify right side
    15,378.43x = 176,247,531.40
  5. Step 5: Solve for x
    x = 176,247,531.40/15,378.43
  6. Step 6: Final answer
    x = 11,460.70

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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.