Home / 39,696.84-54,781.40-21,792.14

Finding the Fourth Proportional to 39,696.84, 54,781.40 and 21,792.14

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Solution

The fourth proportional to 39,696.84, 54,781.40 and 21,792.14 is: 30,073.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,696.84 : 54,781.40 = 21,792.14 : x
  2. Step 2: Convert to fraction form
    39,696.84/54,781.40 = 21,792.14/x
  3. Step 3: Cross multiply
    39,696.84x = 54,781.40 × 21,792.14
  4. Step 4: Simplify right side
    39,696.84x = 1,193,803,938.20
  5. Step 5: Solve for x
    x = 1,193,803,938.20/39,696.84
  6. Step 6: Final answer
    x = 30,073.02

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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.