Home / 20,947.41-31,426.11-6,156.81

Finding the Fourth Proportional to 20,947.41, 31,426.11 and 6,156.81

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Solution

The fourth proportional to 20,947.41, 31,426.11 and 6,156.81 is: 9,236.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,947.41 : 31,426.11 = 6,156.81 : x
  2. Step 2: Convert to fraction form
    20,947.41/31,426.11 = 6,156.81/x
  3. Step 3: Cross multiply
    20,947.41x = 31,426.11 × 6,156.81
  4. Step 4: Simplify right side
    20,947.41x = 193,484,588.31
  5. Step 5: Solve for x
    x = 193,484,588.31/20,947.41
  6. Step 6: Final answer
    x = 9,236.68

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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.