Home / 25,434.10-38,158.56-11,391.00

Finding the Fourth Proportional to 25,434.10, 38,158.56 and 11,391.00

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Solution

The fourth proportional to 25,434.10, 38,158.56 and 11,391.00 is: 17,089.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,434.10 : 38,158.56 = 11,391.00 : x
  2. Step 2: Convert to fraction form
    25,434.10/38,158.56 = 11,391.00/x
  3. Step 3: Cross multiply
    25,434.10x = 38,158.56 × 11,391.00
  4. Step 4: Simplify right side
    25,434.10x = 434,664,013.87
  5. Step 5: Solve for x
    x = 434,664,013.87/25,434.10
  6. Step 6: Final answer
    x = 17,089.81

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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.