Home / 27,039.78-37,314.68-15,715.91

Finding the Fourth Proportional to 27,039.78, 37,314.68 and 15,715.91

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Solution

The fourth proportional to 27,039.78, 37,314.68 and 15,715.91 is: 21,687.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,039.78 : 37,314.68 = 15,715.91 : x
  2. Step 2: Convert to fraction form
    27,039.78/37,314.68 = 15,715.91/x
  3. Step 3: Cross multiply
    27,039.78x = 37,314.68 × 15,715.91
  4. Step 4: Simplify right side
    27,039.78x = 586,433,887.41
  5. Step 5: Solve for x
    x = 586,433,887.41/27,039.78
  6. Step 6: Final answer
    x = 21,687.82

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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.