Home / 20,742.77-31,101.64-8,264.72

Finding the Fourth Proportional to 20,742.77, 31,101.64 and 8,264.72

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Solution

The fourth proportional to 20,742.77, 31,101.64 and 8,264.72 is: 12,392.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742.77 : 31,101.64 = 8,264.72 : x
  2. Step 2: Convert to fraction form
    20,742.77/31,101.64 = 8,264.72/x
  3. Step 3: Cross multiply
    20,742.77x = 31,101.64 × 8,264.72
  4. Step 4: Simplify right side
    20,742.77x = 257,046,346.14
  5. Step 5: Solve for x
    x = 257,046,346.14/20,742.77
  6. Step 6: Final answer
    x = 12,392.09

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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.