Home / 18,726.06-28,069.53-8,189.58

Finding the Fourth Proportional to 18,726.06, 28,069.53 and 8,189.58

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Solution

The fourth proportional to 18,726.06, 28,069.53 and 8,189.58 is: 12,275.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,726.06 : 28,069.53 = 8,189.58 : x
  2. Step 2: Convert to fraction form
    18,726.06/28,069.53 = 8,189.58/x
  3. Step 3: Cross multiply
    18,726.06x = 28,069.53 × 8,189.58
  4. Step 4: Simplify right side
    18,726.06x = 229,877,661.50
  5. Step 5: Solve for x
    x = 229,877,661.50/18,726.06
  6. Step 6: Final answer
    x = 12,275.82

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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.