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Finding the Fourth Proportional to 12,950.61, 17,874.78 and 9,169.80

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Solution

The fourth proportional to 12,950.61, 17,874.78 and 9,169.80 is: 12,656.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,950.61 : 17,874.78 = 9,169.80 : x
  2. Step 2: Convert to fraction form
    12,950.61/17,874.78 = 9,169.80/x
  3. Step 3: Cross multiply
    12,950.61x = 17,874.78 × 9,169.80
  4. Step 4: Simplify right side
    12,950.61x = 163,908,157.64
  5. Step 5: Solve for x
    x = 163,908,157.64/12,950.61
  6. Step 6: Final answer
    x = 12,656.40

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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.