Home / 15,445.54-21,314.27-8,371.81

Finding the Fourth Proportional to 15,445.54, 21,314.27 and 8,371.81

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Solution

The fourth proportional to 15,445.54, 21,314.27 and 8,371.81 is: 11,552.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,445.54 : 21,314.27 = 8,371.81 : x
  2. Step 2: Convert to fraction form
    15,445.54/21,314.27 = 8,371.81/x
  3. Step 3: Cross multiply
    15,445.54x = 21,314.27 × 8,371.81
  4. Step 4: Simplify right side
    15,445.54x = 178,439,018.73
  5. Step 5: Solve for x
    x = 178,439,018.73/15,445.54
  6. Step 6: Final answer
    x = 11,552.79

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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.