Home / 39,594.64-54,640.61-21,690.28

Finding the Fourth Proportional to 39,594.64, 54,640.61 and 21,690.28

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Solution

The fourth proportional to 39,594.64, 54,640.61 and 21,690.28 is: 29,932.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,594.64 : 54,640.61 = 21,690.28 : x
  2. Step 2: Convert to fraction form
    39,594.64/54,640.61 = 21,690.28/x
  3. Step 3: Cross multiply
    39,594.64x = 54,640.61 × 21,690.28
  4. Step 4: Simplify right side
    39,594.64x = 1,185,170,130.27
  5. Step 5: Solve for x
    x = 1,185,170,130.27/39,594.64
  6. Step 6: Final answer
    x = 29,932.59

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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.