Home / 27,039.76-37,314.64-15,715.88

Finding the Fourth Proportional to 27,039.76, 37,314.64 and 15,715.88

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Solution

The fourth proportional to 27,039.76, 37,314.64 and 15,715.88 is: 21,687.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,039.76 : 37,314.64 = 15,715.88 : x
  2. Step 2: Convert to fraction form
    27,039.76/37,314.64 = 15,715.88/x
  3. Step 3: Cross multiply
    27,039.76x = 37,314.64 × 15,715.88
  4. Step 4: Simplify right side
    27,039.76x = 586,432,377.48
  5. Step 5: Solve for x
    x = 586,432,377.48/27,039.76
  6. Step 6: Final answer
    x = 21,687.78

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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.