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Finding the Fourth Proportional to 25,993.79, 38,990.67 and 9,140.03

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Solution

The fourth proportional to 25,993.79, 38,990.67 and 9,140.03 is: 13,710.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,993.79 : 38,990.67 = 9,140.03 : x
  2. Step 2: Convert to fraction form
    25,993.79/38,990.67 = 9,140.03/x
  3. Step 3: Cross multiply
    25,993.79x = 38,990.67 × 9,140.03
  4. Step 4: Simplify right side
    25,993.79x = 356,375,698.57
  5. Step 5: Solve for x
    x = 356,375,698.57/25,993.79
  6. Step 6: Final answer
    x = 13,710.03

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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.