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Finding the Fourth Proportional to 12,482.15, 18,728.08 and 5,913.86

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Solution

The fourth proportional to 12,482.15, 18,728.08 and 5,913.86 is: 8,873.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,482.15 : 18,728.08 = 5,913.86 : x
  2. Step 2: Convert to fraction form
    12,482.15/18,728.08 = 5,913.86/x
  3. Step 3: Cross multiply
    12,482.15x = 18,728.08 × 5,913.86
  4. Step 4: Simplify right side
    12,482.15x = 110,755,134.76
  5. Step 5: Solve for x
    x = 110,755,134.76/12,482.15
  6. Step 6: Final answer
    x = 8,873.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.