Home / 27,696.02-38,220.31-15,120.77

Finding the Fourth Proportional to 27,696.02, 38,220.31 and 15,120.77

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Solution

The fourth proportional to 27,696.02, 38,220.31 and 15,120.77 is: 20,866.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,696.02 : 38,220.31 = 15,120.77 : x
  2. Step 2: Convert to fraction form
    27,696.02/38,220.31 = 15,120.77/x
  3. Step 3: Cross multiply
    27,696.02x = 38,220.31 × 15,120.77
  4. Step 4: Simplify right side
    27,696.02x = 577,920,602.15
  5. Step 5: Solve for x
    x = 577,920,602.15/27,696.02
  6. Step 6: Final answer
    x = 20,866.56

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Half scale
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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.