Home / 27,695.58-38,219.64-15,120.34

Finding the Fourth Proportional to 27,695.58, 38,219.64 and 15,120.34

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Solution

The fourth proportional to 27,695.58, 38,219.64 and 15,120.34 is: 20,865.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,695.58 : 38,219.64 = 15,120.34 : x
  2. Step 2: Convert to fraction form
    27,695.58/38,219.64 = 15,120.34/x
  3. Step 3: Cross multiply
    27,695.58x = 38,219.64 × 15,120.34
  4. Step 4: Simplify right side
    27,695.58x = 577,893,951.48
  5. Step 5: Solve for x
    x = 577,893,951.48/27,695.58
  6. Step 6: Final answer
    x = 20,865.93

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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.