Home / 18,675.28-25,770.80-10,716.76

Finding the Fourth Proportional to 18,675.28, 25,770.80 and 10,716.76

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Solution

The fourth proportional to 18,675.28, 25,770.80 and 10,716.76 is: 14,788.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,675.28 : 25,770.80 = 10,716.76 : x
  2. Step 2: Convert to fraction form
    18,675.28/25,770.80 = 10,716.76/x
  3. Step 3: Cross multiply
    18,675.28x = 25,770.80 × 10,716.76
  4. Step 4: Simplify right side
    18,675.28x = 276,179,478.61
  5. Step 5: Solve for x
    x = 276,179,478.61/18,675.28
  6. Step 6: Final answer
    x = 14,788.51

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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.