Home / 28,106.65-38,788.67-16,171.80

Finding the Fourth Proportional to 28,106.65, 38,788.67 and 16,171.80

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Solution

The fourth proportional to 28,106.65, 38,788.67 and 16,171.80 is: 22,317.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,106.65 : 38,788.67 = 16,171.80 : x
  2. Step 2: Convert to fraction form
    28,106.65/38,788.67 = 16,171.80/x
  3. Step 3: Cross multiply
    28,106.65x = 38,788.67 × 16,171.80
  4. Step 4: Simplify right side
    28,106.65x = 627,282,726.66
  5. Step 5: Solve for x
    x = 627,282,726.66/28,106.65
  6. Step 6: Final answer
    x = 22,317.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.