Home / 39,243.39-54,156.90-21,339.45

Finding the Fourth Proportional to 39,243.39, 54,156.90 and 21,339.45

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Solution

The fourth proportional to 39,243.39, 54,156.90 and 21,339.45 is: 29,449.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,243.39 : 54,156.90 = 21,339.45 : x
  2. Step 2: Convert to fraction form
    39,243.39/54,156.90 = 21,339.45/x
  3. Step 3: Cross multiply
    39,243.39x = 54,156.90 × 21,339.45
  4. Step 4: Simplify right side
    39,243.39x = 1,155,678,539.73
  5. Step 5: Solve for x
    x = 1,155,678,539.73/39,243.39
  6. Step 6: Final answer
    x = 29,449.00

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Double scale
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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.