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Finding the Fourth Proportional to 25,983.84, 35,812.08 and 20,696.16

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Solution

The fourth proportional to 25,983.84, 35,812.08 and 20,696.16 is: 28,524.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,983.84 : 35,812.08 = 20,696.16 : x
  2. Step 2: Convert to fraction form
    25,983.84/35,812.08 = 20,696.16/x
  3. Step 3: Cross multiply
    25,983.84x = 35,812.08 × 20,696.16
  4. Step 4: Simplify right side
    25,983.84x = 741,172,537.61
  5. Step 5: Solve for x
    x = 741,172,537.61/25,983.84
  6. Step 6: Final answer
    x = 28,524.37

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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.