Home / 39,823.20-54,956.06-21,918.21

Finding the Fourth Proportional to 39,823.20, 54,956.06 and 21,918.21

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Solution

The fourth proportional to 39,823.20, 54,956.06 and 21,918.21 is: 30,247.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,823.20 : 54,956.06 = 21,918.21 : x
  2. Step 2: Convert to fraction form
    39,823.20/54,956.06 = 21,918.21/x
  3. Step 3: Cross multiply
    39,823.20x = 54,956.06 × 21,918.21
  4. Step 4: Simplify right side
    39,823.20x = 1,204,538,354.26
  5. Step 5: Solve for x
    x = 1,204,538,354.26/39,823.20
  6. Step 6: Final answer
    x = 30,247.15

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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.