Home / 20,947.77-31,428.50-6,156.81

Finding the Fourth Proportional to 20,947.77, 31,428.50 and 6,156.81

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Solution

The fourth proportional to 20,947.77, 31,428.50 and 6,156.81 is: 9,237.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,947.77 : 31,428.50 = 6,156.81 : x
  2. Step 2: Convert to fraction form
    20,947.77/31,428.50 = 6,156.81/x
  3. Step 3: Cross multiply
    20,947.77x = 31,428.50 × 6,156.81
  4. Step 4: Simplify right side
    20,947.77x = 193,499,272.30
  5. Step 5: Solve for x
    x = 193,499,272.30/20,947.77
  6. Step 6: Final answer
    x = 9,237.23

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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.