Home / 27,630.17-38,143.25-19,138.76

Finding the Fourth Proportional to 27,630.17, 38,143.25 and 19,138.76

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Solution

The fourth proportional to 27,630.17, 38,143.25 and 19,138.76 is: 26,420.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,630.17 : 38,143.25 = 19,138.76 : x
  2. Step 2: Convert to fraction form
    27,630.17/38,143.25 = 19,138.76/x
  3. Step 3: Cross multiply
    27,630.17x = 38,143.25 × 19,138.76
  4. Step 4: Simplify right side
    27,630.17x = 730,014,220.96
  5. Step 5: Solve for x
    x = 730,014,220.96/27,630.17
  6. Step 6: Final answer
    x = 26,420.91

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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.