Home / 27,542.12-38,029.56-21,158.64

Finding the Fourth Proportional to 27,542.12, 38,029.56 and 21,158.64

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Solution

The fourth proportional to 27,542.12, 38,029.56 and 21,158.64 is: 29,215.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,542.12 : 38,029.56 = 21,158.64 : x
  2. Step 2: Convert to fraction form
    27,542.12/38,029.56 = 21,158.64/x
  3. Step 3: Cross multiply
    27,542.12x = 38,029.56 × 21,158.64
  4. Step 4: Simplify right side
    27,542.12x = 804,653,690.05
  5. Step 5: Solve for x
    x = 804,653,690.05/27,542.12
  6. Step 6: Final answer
    x = 29,215.39

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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.