Home / 39,772.32-54,887.08-21,868.62

Finding the Fourth Proportional to 39,772.32, 54,887.08 and 21,868.62

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Solution

The fourth proportional to 39,772.32, 54,887.08 and 21,868.62 is: 30,179.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,772.32 : 54,887.08 = 21,868.62 : x
  2. Step 2: Convert to fraction form
    39,772.32/54,887.08 = 21,868.62/x
  3. Step 3: Cross multiply
    39,772.32x = 54,887.08 × 21,868.62
  4. Step 4: Simplify right side
    39,772.32x = 1,200,304,695.43
  5. Step 5: Solve for x
    x = 1,200,304,695.43/39,772.32
  6. Step 6: Final answer
    x = 30,179.40

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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.