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Finding the Fourth Proportional to 18,605.85, 25,675.63 and 10,647.57

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Solution

The fourth proportional to 18,605.85, 25,675.63 and 10,647.57 is: 14,693.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,605.85 : 25,675.63 = 10,647.57 : x
  2. Step 2: Convert to fraction form
    18,605.85/25,675.63 = 10,647.57/x
  3. Step 3: Cross multiply
    18,605.85x = 25,675.63 × 10,647.57
  4. Step 4: Simplify right side
    18,605.85x = 273,382,886.10
  5. Step 5: Solve for x
    x = 273,382,886.10/18,605.85
  6. Step 6: Final answer
    x = 14,693.38

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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.