Home / 27,696.68-38,219.64-15,121.40

Finding the Fourth Proportional to 27,696.68, 38,219.64 and 15,121.40

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Solution

The fourth proportional to 27,696.68, 38,219.64 and 15,121.40 is: 20,866.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,696.68 : 38,219.64 = 15,121.40 : x
  2. Step 2: Convert to fraction form
    27,696.68/38,219.64 = 15,121.40/x
  3. Step 3: Cross multiply
    27,696.68x = 38,219.64 × 15,121.40
  4. Step 4: Simplify right side
    27,696.68x = 577,934,464.30
  5. Step 5: Solve for x
    x = 577,934,464.30/27,696.68
  6. Step 6: Final answer
    x = 20,866.56

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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.