Home / 28,144.26-38,839.06-15,570.90

Finding the Fourth Proportional to 28,144.26, 38,839.06 and 15,570.90

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Solution

The fourth proportional to 28,144.26, 38,839.06 and 15,570.90 is: 21,487.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,144.26 : 38,839.06 = 15,570.90 : x
  2. Step 2: Convert to fraction form
    28,144.26/38,839.06 = 15,570.90/x
  3. Step 3: Cross multiply
    28,144.26x = 38,839.06 × 15,570.90
  4. Step 4: Simplify right side
    28,144.26x = 604,759,119.35
  5. Step 5: Solve for x
    x = 604,759,119.35/28,144.26
  6. Step 6: Final answer
    x = 21,487.83

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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.