Home / 28,064.43-38,728.98-15,489.18

Finding the Fourth Proportional to 28,064.43, 38,728.98 and 15,489.18

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Solution

The fourth proportional to 28,064.43, 38,728.98 and 15,489.18 is: 21,375.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,064.43 : 38,728.98 = 15,489.18 : x
  2. Step 2: Convert to fraction form
    28,064.43/38,728.98 = 15,489.18/x
  3. Step 3: Cross multiply
    28,064.43x = 38,728.98 × 15,489.18
  4. Step 4: Simplify right side
    28,064.43x = 599,880,142.44
  5. Step 5: Solve for x
    x = 599,880,142.44/28,064.43
  6. Step 6: Final answer
    x = 21,375.11

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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.