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Finding the Fourth Proportional to 27,620.86, 38,119.54 and 16,865.14

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Solution

The fourth proportional to 27,620.86, 38,119.54 and 16,865.14 is: 23,275.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,620.86 : 38,119.54 = 16,865.14 : x
  2. Step 2: Convert to fraction form
    27,620.86/38,119.54 = 16,865.14/x
  3. Step 3: Cross multiply
    27,620.86x = 38,119.54 × 16,865.14
  4. Step 4: Simplify right side
    27,620.86x = 642,891,378.84
  5. Step 5: Solve for x
    x = 642,891,378.84/27,620.86
  6. Step 6: Final answer
    x = 23,275.57

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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.