Home / 21,276.11-31,911.72-5,694.95

Finding the Fourth Proportional to 21,276.11, 31,911.72 and 5,694.95

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Solution

The fourth proportional to 21,276.11, 31,911.72 and 5,694.95 is: 8,541.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,276.11 : 31,911.72 = 5,694.95 : x
  2. Step 2: Convert to fraction form
    21,276.11/31,911.72 = 5,694.95/x
  3. Step 3: Cross multiply
    21,276.11x = 31,911.72 × 5,694.95
  4. Step 4: Simplify right side
    21,276.11x = 181,735,649.81
  5. Step 5: Solve for x
    x = 181,735,649.81/21,276.11
  6. Step 6: Final answer
    x = 8,541.77

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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.