Home / 27,931.80-38,546.10-15,185.10

Finding the Fourth Proportional to 27,931.80, 38,546.10 and 15,185.10

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Solution

The fourth proportional to 27,931.80, 38,546.10 and 15,185.10 is: 20,955.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,931.80 : 38,546.10 = 15,185.10 : x
  2. Step 2: Convert to fraction form
    27,931.80/38,546.10 = 15,185.10/x
  3. Step 3: Cross multiply
    27,931.80x = 38,546.10 × 15,185.10
  4. Step 4: Simplify right side
    27,931.80x = 585,326,383.11
  5. Step 5: Solve for x
    x = 585,326,383.11/27,931.80
  6. Step 6: Final answer
    x = 20,955.56

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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.