Home / 18,759.06-28,129.88-6,909.84

Finding the Fourth Proportional to 18,759.06, 28,129.88 and 6,909.84

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Solution

The fourth proportional to 18,759.06, 28,129.88 and 6,909.84 is: 10,361.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,759.06 : 28,129.88 = 6,909.84 : x
  2. Step 2: Convert to fraction form
    18,759.06/28,129.88 = 6,909.84/x
  3. Step 3: Cross multiply
    18,759.06x = 28,129.88 × 6,909.84
  4. Step 4: Simplify right side
    18,759.06x = 194,372,970.02
  5. Step 5: Solve for x
    x = 194,372,970.02/18,759.06
  6. Step 6: Final answer
    x = 10,361.55

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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.