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Finding the Fourth Proportional to 25,305.40, 37,989.30 and 15,945.40

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Solution

The fourth proportional to 25,305.40, 37,989.30 and 15,945.40 is: 23,937.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,305.40 : 37,989.30 = 15,945.40 : x
  2. Step 2: Convert to fraction form
    25,305.40/37,989.30 = 15,945.40/x
  3. Step 3: Cross multiply
    25,305.40x = 37,989.30 × 15,945.40
  4. Step 4: Simplify right side
    25,305.40x = 605,754,584.22
  5. Step 5: Solve for x
    x = 605,754,584.22/25,305.40
  6. Step 6: Final answer
    x = 23,937.76

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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.