Home / 12,478.40-18,717.60-3,244.40

Finding the Fourth Proportional to 12,478.40, 18,717.60 and 3,244.40

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Solution

The fourth proportional to 12,478.40, 18,717.60 and 3,244.40 is: 4,866.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478.40 : 18,717.60 = 3,244.40 : x
  2. Step 2: Convert to fraction form
    12,478.40/18,717.60 = 3,244.40/x
  3. Step 3: Cross multiply
    12,478.40x = 18,717.60 × 3,244.40
  4. Step 4: Simplify right side
    12,478.40x = 60,727,381.44
  5. Step 5: Solve for x
    x = 60,727,381.44/12,478.40
  6. Step 6: Final answer
    x = 4,866.60

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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.