Home / 28,097.80-38,721.68-20,126.16

Finding the Fourth Proportional to 28,097.80, 38,721.68 and 20,126.16

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Solution

The fourth proportional to 28,097.80, 38,721.68 and 20,126.16 is: 27,735.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,097.80 : 38,721.68 = 20,126.16 : x
  2. Step 2: Convert to fraction form
    28,097.80/38,721.68 = 20,126.16/x
  3. Step 3: Cross multiply
    28,097.80x = 38,721.68 × 20,126.16
  4. Step 4: Simplify right side
    28,097.80x = 779,318,727.15
  5. Step 5: Solve for x
    x = 779,318,727.15/28,097.80
  6. Step 6: Final answer
    x = 27,735.93

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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.