Home / 15,211.67-20,963.03-10,955.21

Finding the Fourth Proportional to 15,211.67, 20,963.03 and 10,955.21

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Solution

The fourth proportional to 15,211.67, 20,963.03 and 10,955.21 is: 15,097.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,211.67 : 20,963.03 = 10,955.21 : x
  2. Step 2: Convert to fraction form
    15,211.67/20,963.03 = 10,955.21/x
  3. Step 3: Cross multiply
    15,211.67x = 20,963.03 × 10,955.21
  4. Step 4: Simplify right side
    15,211.67x = 229,654,236.30
  5. Step 5: Solve for x
    x = 229,654,236.30/15,211.67
  6. Step 6: Final answer
    x = 15,097.25

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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.