Home / 15,191.12-20,963.70-8,476.67

Finding the Fourth Proportional to 15,191.12, 20,963.70 and 8,476.67

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Solution

The fourth proportional to 15,191.12, 20,963.70 and 8,476.67 is: 11,697.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,191.12 : 20,963.70 = 8,476.67 : x
  2. Step 2: Convert to fraction form
    15,191.12/20,963.70 = 8,476.67/x
  3. Step 3: Cross multiply
    15,191.12x = 20,963.70 × 8,476.67
  4. Step 4: Simplify right side
    15,191.12x = 177,702,419.29
  5. Step 5: Solve for x
    x = 177,702,419.29/15,191.12
  6. Step 6: Final answer
    x = 11,697.78

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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.