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Finding the Fourth Proportional to 25,879.28, 38,828.76 and 10,307.84

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Solution

The fourth proportional to 25,879.28, 38,828.76 and 10,307.84 is: 15,465.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,879.28 : 38,828.76 = 10,307.84 : x
  2. Step 2: Convert to fraction form
    25,879.28/38,828.76 = 10,307.84/x
  3. Step 3: Cross multiply
    25,879.28x = 38,828.76 × 10,307.84
  4. Step 4: Simplify right side
    25,879.28x = 400,240,645.48
  5. Step 5: Solve for x
    x = 400,240,645.48/25,879.28
  6. Step 6: Final answer
    x = 15,465.68

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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.