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Finding the Fourth Proportional to 25,775.71, 38,643.84 and 17,855.46

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Solution

The fourth proportional to 25,775.71, 38,643.84 and 17,855.46 is: 26,769.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,775.71 : 38,643.84 = 17,855.46 : x
  2. Step 2: Convert to fraction form
    25,775.71/38,643.84 = 17,855.46/x
  3. Step 3: Cross multiply
    25,775.71x = 38,643.84 × 17,855.46
  4. Step 4: Simplify right side
    25,775.71x = 690,003,539.37
  5. Step 5: Solve for x
    x = 690,003,539.37/25,775.71
  6. Step 6: Final answer
    x = 26,769.53

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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.