Home / 28,091.81-38,766.30-15,344.84

Finding the Fourth Proportional to 28,091.81, 38,766.30 and 15,344.84

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Solution

The fourth proportional to 28,091.81, 38,766.30 and 15,344.84 is: 21,175.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,091.81 : 38,766.30 = 15,344.84 : x
  2. Step 2: Convert to fraction form
    28,091.81/38,766.30 = 15,344.84/x
  3. Step 3: Cross multiply
    28,091.81x = 38,766.30 × 15,344.84
  4. Step 4: Simplify right side
    28,091.81x = 594,862,578.52
  5. Step 5: Solve for x
    x = 594,862,578.52/28,091.81
  6. Step 6: Final answer
    x = 21,175.66

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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.