Home / 27,790.57-38,350.56-15,215.32

Finding the Fourth Proportional to 27,790.57, 38,350.56 and 15,215.32

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Solution

The fourth proportional to 27,790.57, 38,350.56 and 15,215.32 is: 20,996.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,790.57 : 38,350.56 = 15,215.32 : x
  2. Step 2: Convert to fraction form
    27,790.57/38,350.56 = 15,215.32/x
  3. Step 3: Cross multiply
    27,790.57x = 38,350.56 × 15,215.32
  4. Step 4: Simplify right side
    27,790.57x = 583,516,042.58
  5. Step 5: Solve for x
    x = 583,516,042.58/27,790.57
  6. Step 6: Final answer
    x = 20,996.91

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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.