Home / 38,890.87-53,655.36-25,469.78

Finding the Fourth Proportional to 38,890.87, 53,655.36 and 25,469.78

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Solution

The fourth proportional to 38,890.87, 53,655.36 and 25,469.78 is: 35,139.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,890.87 : 53,655.36 = 25,469.78 : x
  2. Step 2: Convert to fraction form
    38,890.87/53,655.36 = 25,469.78/x
  3. Step 3: Cross multiply
    38,890.87x = 53,655.36 × 25,469.78
  4. Step 4: Simplify right side
    38,890.87x = 1,366,590,215.02
  5. Step 5: Solve for x
    x = 1,366,590,215.02/38,890.87
  6. Step 6: Final answer
    x = 35,139.10

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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.