Home / 27,696.21-38,220.57-15,120.96

Finding the Fourth Proportional to 27,696.21, 38,220.57 and 15,120.96

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Solution

The fourth proportional to 27,696.21, 38,220.57 and 15,120.96 is: 20,866.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,696.21 : 38,220.57 = 15,120.96 : x
  2. Step 2: Convert to fraction form
    27,696.21/38,220.57 = 15,120.96/x
  3. Step 3: Cross multiply
    27,696.21x = 38,220.57 × 15,120.96
  4. Step 4: Simplify right side
    27,696.21x = 577,931,710.15
  5. Step 5: Solve for x
    x = 577,931,710.15/27,696.21
  6. Step 6: Final answer
    x = 20,866.82

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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.