Home / 20,587.17-30,856.26-9,906.81

Finding the Fourth Proportional to 20,587.17, 30,856.26 and 9,906.81

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Solution

The fourth proportional to 20,587.17, 30,856.26 and 9,906.81 is: 14,848.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,587.17 : 30,856.26 = 9,906.81 : x
  2. Step 2: Convert to fraction form
    20,587.17/30,856.26 = 9,906.81/x
  3. Step 3: Cross multiply
    20,587.17x = 30,856.26 × 9,906.81
  4. Step 4: Simplify right side
    20,587.17x = 305,687,105.13
  5. Step 5: Solve for x
    x = 305,687,105.13/20,587.17
  6. Step 6: Final answer
    x = 14,848.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.