Home / 39,822.60-54,955.09-21,917.62

Finding the Fourth Proportional to 39,822.60, 54,955.09 and 21,917.62

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Solution

The fourth proportional to 39,822.60, 54,955.09 and 21,917.62 is: 30,246.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,822.60 : 54,955.09 = 21,917.62 : x
  2. Step 2: Convert to fraction form
    39,822.60/54,955.09 = 21,917.62/x
  3. Step 3: Cross multiply
    39,822.60x = 54,955.09 × 21,917.62
  4. Step 4: Simplify right side
    39,822.60x = 1,204,484,875.78
  5. Step 5: Solve for x
    x = 1,204,484,875.78/39,822.60
  6. Step 6: Final answer
    x = 30,246.26

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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.