Home / 27,278.35-37,639.79-15,339.38

Finding the Fourth Proportional to 27,278.35, 37,639.79 and 15,339.38

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Solution

The fourth proportional to 27,278.35, 37,639.79 and 15,339.38 is: 21,165.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,278.35 : 37,639.79 = 15,339.38 : x
  2. Step 2: Convert to fraction form
    27,278.35/37,639.79 = 15,339.38/x
  3. Step 3: Cross multiply
    27,278.35x = 37,639.79 × 15,339.38
  4. Step 4: Simplify right side
    27,278.35x = 577,371,019.39
  5. Step 5: Solve for x
    x = 577,371,019.39/27,278.35
  6. Step 6: Final answer
    x = 21,165.91

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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.