Home / 15,181.04-20,943.24-9,211.52

Finding the Fourth Proportional to 15,181.04, 20,943.24 and 9,211.52

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Solution

The fourth proportional to 15,181.04, 20,943.24 and 9,211.52 is: 12,707.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,181.04 : 20,943.24 = 9,211.52 : x
  2. Step 2: Convert to fraction form
    15,181.04/20,943.24 = 9,211.52/x
  3. Step 3: Cross multiply
    15,181.04x = 20,943.24 × 9,211.52
  4. Step 4: Simplify right side
    15,181.04x = 192,919,074.12
  5. Step 5: Solve for x
    x = 192,919,074.12/15,181.04
  6. Step 6: Final answer
    x = 12,707.90

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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.