Home / 18,907.91-28,360.83-5,759.18

Finding the Fourth Proportional to 18,907.91, 28,360.83 and 5,759.18

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Solution

The fourth proportional to 18,907.91, 28,360.83 and 5,759.18 is: 8,638.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,907.91 : 28,360.83 = 5,759.18 : x
  2. Step 2: Convert to fraction form
    18,907.91/28,360.83 = 5,759.18/x
  3. Step 3: Cross multiply
    18,907.91x = 28,360.83 × 5,759.18
  4. Step 4: Simplify right side
    18,907.91x = 163,335,124.92
  5. Step 5: Solve for x
    x = 163,335,124.92/18,907.91
  6. Step 6: Final answer
    x = 8,638.45

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Similar ratio
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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.