Home / 10,965.96-15,121.11-6,981.99

Finding the Fourth Proportional to 10,965.96, 15,121.11 and 6,981.99

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Solution

The fourth proportional to 10,965.96, 15,121.11 and 6,981.99 is: 9,627.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,965.96 : 15,121.11 = 6,981.99 : x
  2. Step 2: Convert to fraction form
    10,965.96/15,121.11 = 6,981.99/x
  3. Step 3: Cross multiply
    10,965.96x = 15,121.11 × 6,981.99
  4. Step 4: Simplify right side
    10,965.96x = 105,575,438.81
  5. Step 5: Solve for x
    x = 105,575,438.81/10,965.96
  6. Step 6: Final answer
    x = 9,627.56

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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.