Home / 15,191.45-20,970.60-9,225.04

Finding the Fourth Proportional to 15,191.45, 20,970.60 and 9,225.04

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Solution

The fourth proportional to 15,191.45, 20,970.60 and 9,225.04 is: 12,734.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,191.45 : 20,970.60 = 9,225.04 : x
  2. Step 2: Convert to fraction form
    15,191.45/20,970.60 = 9,225.04/x
  3. Step 3: Cross multiply
    15,191.45x = 20,970.60 × 9,225.04
  4. Step 4: Simplify right side
    15,191.45x = 193,454,576.12
  5. Step 5: Solve for x
    x = 193,454,576.12/15,191.45
  6. Step 6: Final answer
    x = 12,734.44

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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.