Home / 39,743.91-54,848.07-21,840.62

Finding the Fourth Proportional to 39,743.91, 54,848.07 and 21,840.62

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Solution

The fourth proportional to 39,743.91, 54,848.07 and 21,840.62 is: 30,140.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,743.91 : 54,848.07 = 21,840.62 : x
  2. Step 2: Convert to fraction form
    39,743.91/54,848.07 = 21,840.62/x
  3. Step 3: Cross multiply
    39,743.91x = 54,848.07 × 21,840.62
  4. Step 4: Simplify right side
    39,743.91x = 1,197,915,580.36
  5. Step 5: Solve for x
    x = 1,197,915,580.36/39,743.91
  6. Step 6: Final answer
    x = 30,140.86

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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.