Home / 39,822.12-54,955.14-21,918.96

Finding the Fourth Proportional to 39,822.12, 54,955.14 and 21,918.96

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Solution

The fourth proportional to 39,822.12, 54,955.14 and 21,918.96 is: 30,248.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,822.12 : 54,955.14 = 21,918.96 : x
  2. Step 2: Convert to fraction form
    39,822.12/54,955.14 = 21,918.96/x
  3. Step 3: Cross multiply
    39,822.12x = 54,955.14 × 21,918.96
  4. Step 4: Simplify right side
    39,822.12x = 1,204,559,515.45
  5. Step 5: Solve for x
    x = 1,204,559,515.45/39,822.12
  6. Step 6: Final answer
    x = 30,248.50

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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.