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Finding the Fourth Proportional to 25,879.76, 35,666.70 and 18,793.88

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Solution

The fourth proportional to 25,879.76, 35,666.70 and 18,793.88 is: 25,901.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,879.76 : 35,666.70 = 18,793.88 : x
  2. Step 2: Convert to fraction form
    25,879.76/35,666.70 = 18,793.88/x
  3. Step 3: Cross multiply
    25,879.76x = 35,666.70 × 18,793.88
  4. Step 4: Simplify right side
    25,879.76x = 670,315,679.80
  5. Step 5: Solve for x
    x = 670,315,679.80/25,879.76
  6. Step 6: Final answer
    x = 25,901.16

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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.