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Finding the Fourth Proportional to 14,758.19, 20,366.30 and 8,134.19

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Solution

The fourth proportional to 14,758.19, 20,366.30 and 8,134.19 is: 11,225.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,758.19 : 20,366.30 = 8,134.19 : x
  2. Step 2: Convert to fraction form
    14,758.19/20,366.30 = 8,134.19/x
  3. Step 3: Cross multiply
    14,758.19x = 20,366.30 × 8,134.19
  4. Step 4: Simplify right side
    14,758.19x = 165,663,353.80
  5. Step 5: Solve for x
    x = 165,663,353.80/14,758.19
  6. Step 6: Final answer
    x = 11,225.18

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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.