Home / 18,657.31-25,768.96-12,358.75

Finding the Fourth Proportional to 18,657.31, 25,768.96 and 12,358.75

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Solution

The fourth proportional to 18,657.31, 25,768.96 and 12,358.75 is: 17,069.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,657.31 : 25,768.96 = 12,358.75 : x
  2. Step 2: Convert to fraction form
    18,657.31/25,768.96 = 12,358.75/x
  3. Step 3: Cross multiply
    18,657.31x = 25,768.96 × 12,358.75
  4. Step 4: Simplify right side
    18,657.31x = 318,472,134.40
  5. Step 5: Solve for x
    x = 318,472,134.40/18,657.31
  6. Step 6: Final answer
    x = 17,069.56

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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.