Home / 27,709.78-38,238.06-15,773.08

Finding the Fourth Proportional to 27,709.78, 38,238.06 and 15,773.08

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Solution

The fourth proportional to 27,709.78, 38,238.06 and 15,773.08 is: 21,766.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,709.78 : 38,238.06 = 15,773.08 : x
  2. Step 2: Convert to fraction form
    27,709.78/38,238.06 = 15,773.08/x
  3. Step 3: Cross multiply
    27,709.78x = 38,238.06 × 15,773.08
  4. Step 4: Simplify right side
    27,709.78x = 603,131,979.42
  5. Step 5: Solve for x
    x = 603,131,979.42/27,709.78
  6. Step 6: Final answer
    x = 21,766.03

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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.