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Finding the Fourth Proportional to 15,558.54, 21,471.81 and 8,844.18

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Solution

The fourth proportional to 15,558.54, 21,471.81 and 8,844.18 is: 12,205.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,558.54 : 21,471.81 = 8,844.18 : x
  2. Step 2: Convert to fraction form
    15,558.54/21,471.81 = 8,844.18/x
  3. Step 3: Cross multiply
    15,558.54x = 21,471.81 × 8,844.18
  4. Step 4: Simplify right side
    15,558.54x = 189,900,552.57
  5. Step 5: Solve for x
    x = 189,900,552.57/15,558.54
  6. Step 6: Final answer
    x = 12,205.55

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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.