Home / 39,021.84-53,850.14-21,116.85

Finding the Fourth Proportional to 39,021.84, 53,850.14 and 21,116.85

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Solution

The fourth proportional to 39,021.84, 53,850.14 and 21,116.85 is: 29,141.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,021.84 : 53,850.14 = 21,116.85 : x
  2. Step 2: Convert to fraction form
    39,021.84/53,850.14 = 21,116.85/x
  3. Step 3: Cross multiply
    39,021.84x = 53,850.14 × 21,116.85
  4. Step 4: Simplify right side
    39,021.84x = 1,137,145,059.61
  5. Step 5: Solve for x
    x = 1,137,145,059.61/39,021.84
  6. Step 6: Final answer
    x = 29,141.25

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Half scale
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Double scale
Find fourth proportional to 39,022.84, 53,851.52 and 21,117.85
Similar ratio
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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.