Home / 39,378.09-54,339.69-22,380.06

Finding the Fourth Proportional to 39,378.09, 54,339.69 and 22,380.06

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Solution

The fourth proportional to 39,378.09, 54,339.69 and 22,380.06 is: 30,883.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,378.09 : 54,339.69 = 22,380.06 : x
  2. Step 2: Convert to fraction form
    39,378.09/54,339.69 = 22,380.06/x
  3. Step 3: Cross multiply
    39,378.09x = 54,339.69 × 22,380.06
  4. Step 4: Simplify right side
    39,378.09x = 1,216,125,522.58
  5. Step 5: Solve for x
    x = 1,216,125,522.58/39,378.09
  6. Step 6: Final answer
    x = 30,883.30

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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.