Home / 15,219.54-21,003.80-8,505.18

Finding the Fourth Proportional to 15,219.54, 21,003.80 and 8,505.18

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Solution

The fourth proportional to 15,219.54, 21,003.80 and 8,505.18 is: 11,737.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,219.54 : 21,003.80 = 8,505.18 : x
  2. Step 2: Convert to fraction form
    15,219.54/21,003.80 = 8,505.18/x
  3. Step 3: Cross multiply
    15,219.54x = 21,003.80 × 8,505.18
  4. Step 4: Simplify right side
    15,219.54x = 178,641,057.16
  5. Step 5: Solve for x
    x = 178,641,057.16/15,219.54
  6. Step 6: Final answer
    x = 11,737.61

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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.