Home / 28,456.16-39,270.58-15,883.34

Finding the Fourth Proportional to 28,456.16, 39,270.58 and 15,883.34

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Solution

The fourth proportional to 28,456.16, 39,270.58 and 15,883.34 is: 21,919.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,456.16 : 39,270.58 = 15,883.34 : x
  2. Step 2: Convert to fraction form
    28,456.16/39,270.58 = 15,883.34/x
  3. Step 3: Cross multiply
    28,456.16x = 39,270.58 × 15,883.34
  4. Step 4: Simplify right side
    28,456.16x = 623,747,974.14
  5. Step 5: Solve for x
    x = 623,747,974.14/28,456.16
  6. Step 6: Final answer
    x = 21,919.61

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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.