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Finding the Fourth Proportional to 18,713.03, 25,828.31 and 12,340.77

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Solution

The fourth proportional to 18,713.03, 25,828.31 and 12,340.77 is: 17,033.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,713.03 : 25,828.31 = 12,340.77 : x
  2. Step 2: Convert to fraction form
    18,713.03/25,828.31 = 12,340.77/x
  3. Step 3: Cross multiply
    18,713.03x = 25,828.31 × 12,340.77
  4. Step 4: Simplify right side
    18,713.03x = 318,741,233.20
  5. Step 5: Solve for x
    x = 318,741,233.20/18,713.03
  6. Step 6: Final answer
    x = 17,033.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.