Home / 18,759.25-28,139.82-5,611.74

Finding the Fourth Proportional to 18,759.25, 28,139.82 and 5,611.74

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Solution

The fourth proportional to 18,759.25, 28,139.82 and 5,611.74 is: 8,417.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,759.25 : 28,139.82 = 5,611.74 : x
  2. Step 2: Convert to fraction form
    18,759.25/28,139.82 = 5,611.74/x
  3. Step 3: Cross multiply
    18,759.25x = 28,139.82 × 5,611.74
  4. Step 4: Simplify right side
    18,759.25x = 157,913,353.49
  5. Step 5: Solve for x
    x = 157,913,353.49/18,759.25
  6. Step 6: Final answer
    x = 8,417.89

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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.