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Finding the Fourth Proportional to 12,448.08, 18,685.08 and 9,690.84

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Solution

The fourth proportional to 12,448.08, 18,685.08 and 9,690.84 is: 14,546.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,448.08 : 18,685.08 = 9,690.84 : x
  2. Step 2: Convert to fraction form
    12,448.08/18,685.08 = 9,690.84/x
  3. Step 3: Cross multiply
    12,448.08x = 18,685.08 × 9,690.84
  4. Step 4: Simplify right side
    12,448.08x = 181,074,120.67
  5. Step 5: Solve for x
    x = 181,074,120.67/12,448.08
  6. Step 6: Final answer
    x = 14,546.35

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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.