Home / 39,593.54-54,639.56-21,689.30

Finding the Fourth Proportional to 39,593.54, 54,639.56 and 21,689.30

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Solution

The fourth proportional to 39,593.54, 54,639.56 and 21,689.30 is: 29,931.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,593.54 : 54,639.56 = 21,689.30 : x
  2. Step 2: Convert to fraction form
    39,593.54/54,639.56 = 21,689.30/x
  3. Step 3: Cross multiply
    39,593.54x = 54,639.56 × 21,689.30
  4. Step 4: Simplify right side
    39,593.54x = 1,185,093,999.53
  5. Step 5: Solve for x
    x = 1,185,093,999.53/39,593.54
  6. Step 6: Final answer
    x = 29,931.50

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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.