Home / 39,593.82-54,639.48-21,689.16

Finding the Fourth Proportional to 39,593.82, 54,639.48 and 21,689.16

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Solution

The fourth proportional to 39,593.82, 54,639.48 and 21,689.16 is: 29,931.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,593.82 : 54,639.48 = 21,689.16 : x
  2. Step 2: Convert to fraction form
    39,593.82/54,639.48 = 21,689.16/x
  3. Step 3: Cross multiply
    39,593.82x = 54,639.48 × 21,689.16
  4. Step 4: Simplify right side
    39,593.82x = 1,185,084,424.04
  5. Step 5: Solve for x
    x = 1,185,084,424.04/39,593.82
  6. Step 6: Final answer
    x = 29,931.05

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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.