Home / 39,045.94-53,883.66-21,818.32

Finding the Fourth Proportional to 39,045.94, 53,883.66 and 21,818.32

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Solution

The fourth proportional to 39,045.94, 53,883.66 and 21,818.32 is: 30,109.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,045.94 : 53,883.66 = 21,818.32 : x
  2. Step 2: Convert to fraction form
    39,045.94/53,883.66 = 21,818.32/x
  3. Step 3: Cross multiply
    39,045.94x = 53,883.66 × 21,818.32
  4. Step 4: Simplify right side
    39,045.94x = 1,175,650,936.65
  5. Step 5: Solve for x
    x = 1,175,650,936.65/39,045.94
  6. Step 6: Final answer
    x = 30,109.43

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Double scale
Find fourth proportional to 39,046.94, 53,885.04 and 21,819.32
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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.