Home / 27,618.48-38,144.55-18,650.42

Finding the Fourth Proportional to 27,618.48, 38,144.55 and 18,650.42

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Solution

The fourth proportional to 27,618.48, 38,144.55 and 18,650.42 is: 25,758.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,618.48 : 38,144.55 = 18,650.42 : x
  2. Step 2: Convert to fraction form
    27,618.48/38,144.55 = 18,650.42/x
  3. Step 3: Cross multiply
    27,618.48x = 38,144.55 × 18,650.42
  4. Step 4: Simplify right side
    27,618.48x = 711,411,687.49
  5. Step 5: Solve for x
    x = 711,411,687.49/27,618.48
  6. Step 6: Final answer
    x = 25,758.54

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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.