Home / 15,220.56-21,004.92-8,934.96

Finding the Fourth Proportional to 15,220.56, 21,004.92 and 8,934.96

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Solution

The fourth proportional to 15,220.56, 21,004.92 and 8,934.96 is: 12,330.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,220.56 : 21,004.92 = 8,934.96 : x
  2. Step 2: Convert to fraction form
    15,220.56/21,004.92 = 8,934.96/x
  3. Step 3: Cross multiply
    15,220.56x = 21,004.92 × 8,934.96
  4. Step 4: Simplify right side
    15,220.56x = 187,678,120.00
  5. Step 5: Solve for x
    x = 187,678,120.00/15,220.56
  6. Step 6: Final answer
    x = 12,330.57

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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.