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Finding the Fourth Proportional to 25,879.71, 35,731.70 and 19,819.25

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Solution

The fourth proportional to 25,879.71, 35,731.70 and 19,819.25 is: 27,364.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,879.71 : 35,731.70 = 19,819.25 : x
  2. Step 2: Convert to fraction form
    25,879.71/35,731.70 = 19,819.25/x
  3. Step 3: Cross multiply
    25,879.71x = 35,731.70 × 19,819.25
  4. Step 4: Simplify right side
    25,879.71x = 708,175,535.01
  5. Step 5: Solve for x
    x = 708,175,535.01/25,879.71
  6. Step 6: Final answer
    x = 27,364.13

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1.5x scale

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.