Home / 39,084.30-53,936.28-21,179.40

Finding the Fourth Proportional to 39,084.30, 53,936.28 and 21,179.40

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Solution

The fourth proportional to 39,084.30, 53,936.28 and 21,179.40 is: 29,227.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,084.30 : 53,936.28 = 21,179.40 : x
  2. Step 2: Convert to fraction form
    39,084.30/53,936.28 = 21,179.40/x
  3. Step 3: Cross multiply
    39,084.30x = 53,936.28 × 21,179.40
  4. Step 4: Simplify right side
    39,084.30x = 1,142,338,048.63
  5. Step 5: Solve for x
    x = 1,142,338,048.63/39,084.30
  6. Step 6: Final answer
    x = 29,227.54

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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.