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Finding the Fourth Proportional to 14,679.62, 20,255.90 and 8,307.08

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Solution

The fourth proportional to 14,679.62, 20,255.90 and 8,307.08 is: 11,462.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,679.62 : 20,255.90 = 8,307.08 : x
  2. Step 2: Convert to fraction form
    14,679.62/20,255.90 = 8,307.08/x
  3. Step 3: Cross multiply
    14,679.62x = 20,255.90 × 8,307.08
  4. Step 4: Simplify right side
    14,679.62x = 168,267,381.77
  5. Step 5: Solve for x
    x = 168,267,381.77/14,679.62
  6. Step 6: Final answer
    x = 11,462.65

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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.