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Finding the Fourth Proportional to 12,574.85, 18,865.38 and 8,884.31

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Solution

The fourth proportional to 12,574.85, 18,865.38 and 8,884.31 is: 13,328.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,574.85 : 18,865.38 = 8,884.31 : x
  2. Step 2: Convert to fraction form
    12,574.85/18,865.38 = 8,884.31/x
  3. Step 3: Cross multiply
    12,574.85x = 18,865.38 × 8,884.31
  4. Step 4: Simplify right side
    12,574.85x = 167,605,884.19
  5. Step 5: Solve for x
    x = 167,605,884.19/12,574.85
  6. Step 6: Final answer
    x = 13,328.66

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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.