Home / 12,440.53-18,643.65-8,269.57

Finding the Fourth Proportional to 12,440.53, 18,643.65 and 8,269.57

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Solution

The fourth proportional to 12,440.53, 18,643.65 and 8,269.57 is: 12,392.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,440.53 : 18,643.65 = 8,269.57 : x
  2. Step 2: Convert to fraction form
    12,440.53/18,643.65 = 8,269.57/x
  3. Step 3: Cross multiply
    12,440.53x = 18,643.65 × 8,269.57
  4. Step 4: Simplify right side
    12,440.53x = 154,174,968.73
  5. Step 5: Solve for x
    x = 154,174,968.73/12,440.53
  6. Step 6: Final answer
    x = 12,392.96

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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.