Home / 45,154.74-67,699.28-18,867

Finding the Fourth Proportional to 45,154.74, 67,699.28 and 18,867

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Solution

The fourth proportional to 45,154.74, 67,699.28 and 18,867 is: 28,286.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,154.74 : 67,699.28 = 18,867 : x
  2. Step 2: Convert to fraction form
    45,154.74/67,699.28 = 18,867/x
  3. Step 3: Cross multiply
    45,154.74x = 67,699.28 × 18,867
  4. Step 4: Simplify right side
    45,154.74x = 1,277,282,315.76
  5. Step 5: Solve for x
    x = 1,277,282,315.76/45,154.74
  6. Step 6: Final answer
    x = 28,286.78

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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.