Home / 28,145.92-38,839.44-15,571.12

Finding the Fourth Proportional to 28,145.92, 38,839.44 and 15,571.12

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Solution

The fourth proportional to 28,145.92, 38,839.44 and 15,571.12 is: 21,487.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,145.92 : 38,839.44 = 15,571.12 : x
  2. Step 2: Convert to fraction form
    28,145.92/38,839.44 = 15,571.12/x
  3. Step 3: Cross multiply
    28,145.92x = 38,839.44 × 15,571.12
  4. Step 4: Simplify right side
    28,145.92x = 604,773,580.97
  5. Step 5: Solve for x
    x = 604,773,580.97/28,145.92
  6. Step 6: Final answer
    x = 21,487.08

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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.