Home / 15,220.04-21,003.59-8,505.66

Finding the Fourth Proportional to 15,220.04, 21,003.59 and 8,505.66

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Solution

The fourth proportional to 15,220.04, 21,003.59 and 8,505.66 is: 11,737.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,220.04 : 21,003.59 = 8,505.66 : x
  2. Step 2: Convert to fraction form
    15,220.04/21,003.59 = 8,505.66/x
  3. Step 3: Cross multiply
    15,220.04x = 21,003.59 × 8,505.66
  4. Step 4: Simplify right side
    15,220.04x = 178,649,463.45
  5. Step 5: Solve for x
    x = 178,649,463.45/15,220.04
  6. Step 6: Final answer
    x = 11,737.78

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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.