Home / 27,964.11-38,558.48-20,878.59

Finding the Fourth Proportional to 27,964.11, 38,558.48 and 20,878.59

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Solution

The fourth proportional to 27,964.11, 38,558.48 and 20,878.59 is: 28,788.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,964.11 : 38,558.48 = 20,878.59 : x
  2. Step 2: Convert to fraction form
    27,964.11/38,558.48 = 20,878.59/x
  3. Step 3: Cross multiply
    27,964.11x = 38,558.48 × 20,878.59
  4. Step 4: Simplify right side
    27,964.11x = 805,046,590.55
  5. Step 5: Solve for x
    x = 805,046,590.55/27,964.11
  6. Step 6: Final answer
    x = 28,788.56

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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.