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Finding the Fourth Proportional to 12,482.40, 18,723.60 and 3,248.40

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Solution

The fourth proportional to 12,482.40, 18,723.60 and 3,248.40 is: 4,872.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,482.40 : 18,723.60 = 3,248.40 : x
  2. Step 2: Convert to fraction form
    12,482.40/18,723.60 = 3,248.40/x
  3. Step 3: Cross multiply
    12,482.40x = 18,723.60 × 3,248.40
  4. Step 4: Simplify right side
    12,482.40x = 60,821,742.24
  5. Step 5: Solve for x
    x = 60,821,742.24/12,482.40
  6. Step 6: Final answer
    x = 4,872.60

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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.