Home / 13,434.30-18,521.17-11,334.78

Finding the Fourth Proportional to 13,434.30, 18,521.17 and 11,334.78

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Solution

The fourth proportional to 13,434.30, 18,521.17 and 11,334.78 is: 15,626.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,434.30 : 18,521.17 = 11,334.78 : x
  2. Step 2: Convert to fraction form
    13,434.30/18,521.17 = 11,334.78/x
  3. Step 3: Cross multiply
    13,434.30x = 18,521.17 × 11,334.78
  4. Step 4: Simplify right side
    13,434.30x = 209,933,387.29
  5. Step 5: Solve for x
    x = 209,933,387.29/13,434.30
  6. Step 6: Final answer
    x = 15,626.67

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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.