Home / 27,931.16-38,545.26-15,356

Finding the Fourth Proportional to 27,931.16, 38,545.26 and 15,356

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Solution

The fourth proportional to 27,931.16, 38,545.26 and 15,356 is: 21,191.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,931.16 : 38,545.26 = 15,356 : x
  2. Step 2: Convert to fraction form
    27,931.16/38,545.26 = 15,356/x
  3. Step 3: Cross multiply
    27,931.16x = 38,545.26 × 15,356
  4. Step 4: Simplify right side
    27,931.16x = 591,901,012.56
  5. Step 5: Solve for x
    x = 591,901,012.56/27,931.16
  6. Step 6: Final answer
    x = 21,191.42

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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.