Home / 27,931.62-38,540.11-15,667.42

Finding the Fourth Proportional to 27,931.62, 38,540.11 and 15,667.42

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Solution

The fourth proportional to 27,931.62, 38,540.11 and 15,667.42 is: 21,617.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,931.62 : 38,540.11 = 15,667.42 : x
  2. Step 2: Convert to fraction form
    27,931.62/38,540.11 = 15,667.42/x
  3. Step 3: Cross multiply
    27,931.62x = 38,540.11 × 15,667.42
  4. Step 4: Simplify right side
    27,931.62x = 603,824,090.22
  5. Step 5: Solve for x
    x = 603,824,090.22/27,931.62
  6. Step 6: Final answer
    x = 21,617.94

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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.