Home / 28,480.16-42,687.72-17,811.44

Finding the Fourth Proportional to 28,480.16, 42,687.72 and 17,811.44

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Solution

The fourth proportional to 28,480.16, 42,687.72 and 17,811.44 is: 26,696.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,480.16 : 42,687.72 = 17,811.44 : x
  2. Step 2: Convert to fraction form
    28,480.16/42,687.72 = 17,811.44/x
  3. Step 3: Cross multiply
    28,480.16x = 42,687.72 × 17,811.44
  4. Step 4: Simplify right side
    28,480.16x = 760,329,763.52
  5. Step 5: Solve for x
    x = 760,329,763.52/28,480.16
  6. Step 6: Final answer
    x = 26,696.82

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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.