Home / 15,711.10-21,671.67-11,227.11

Finding the Fourth Proportional to 15,711.10, 21,671.67 and 11,227.11

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Solution

The fourth proportional to 15,711.10, 21,671.67 and 11,227.11 is: 15,486.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,711.10 : 21,671.67 = 11,227.11 : x
  2. Step 2: Convert to fraction form
    15,711.10/21,671.67 = 11,227.11/x
  3. Step 3: Cross multiply
    15,711.10x = 21,671.67 × 11,227.11
  4. Step 4: Simplify right side
    15,711.10x = 243,310,222.97
  5. Step 5: Solve for x
    x = 243,310,222.97/15,711.10
  6. Step 6: Final answer
    x = 15,486.52

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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.