Home / 28,239.38-38,971.62-15,664.14

Finding the Fourth Proportional to 28,239.38, 38,971.62 and 15,664.14

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Solution

The fourth proportional to 28,239.38, 38,971.62 and 15,664.14 is: 21,617.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,239.38 : 38,971.62 = 15,664.14 : x
  2. Step 2: Convert to fraction form
    28,239.38/38,971.62 = 15,664.14/x
  3. Step 3: Cross multiply
    28,239.38x = 38,971.62 × 15,664.14
  4. Step 4: Simplify right side
    28,239.38x = 610,456,911.71
  5. Step 5: Solve for x
    x = 610,456,911.71/28,239.38
  6. Step 6: Final answer
    x = 21,617.22

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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.