Home / 38,128.14-52,618.14-21,132.18

Finding the Fourth Proportional to 38,128.14, 52,618.14 and 21,132.18

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Solution

The fourth proportional to 38,128.14, 52,618.14 and 21,132.18 is: 29,163.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,128.14 : 52,618.14 = 21,132.18 : x
  2. Step 2: Convert to fraction form
    38,128.14/52,618.14 = 21,132.18/x
  3. Step 3: Cross multiply
    38,128.14x = 52,618.14 × 21,132.18
  4. Step 4: Simplify right side
    38,128.14x = 1,111,936,005.75
  5. Step 5: Solve for x
    x = 1,111,936,005.75/38,128.14
  6. Step 6: Final answer
    x = 29,163.13

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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.