Home / 27,931.82-38,545.45-15,185.32

Finding the Fourth Proportional to 27,931.82, 38,545.45 and 15,185.32

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Solution

The fourth proportional to 27,931.82, 38,545.45 and 15,185.32 is: 20,955.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,931.82 : 38,545.45 = 15,185.32 : x
  2. Step 2: Convert to fraction form
    27,931.82/38,545.45 = 15,185.32/x
  3. Step 3: Cross multiply
    27,931.82x = 38,545.45 × 15,185.32
  4. Step 4: Simplify right side
    27,931.82x = 585,324,992.79
  5. Step 5: Solve for x
    x = 585,324,992.79/27,931.82
  6. Step 6: Final answer
    x = 20,955.49

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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.