Home / 21,155.87-31,727.40-6,360.86

Finding the Fourth Proportional to 21,155.87, 31,727.40 and 6,360.86

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Solution

The fourth proportional to 21,155.87, 31,727.40 and 6,360.86 is: 9,539.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,155.87 : 31,727.40 = 6,360.86 : x
  2. Step 2: Convert to fraction form
    21,155.87/31,727.40 = 6,360.86/x
  3. Step 3: Cross multiply
    21,155.87x = 31,727.40 × 6,360.86
  4. Step 4: Simplify right side
    21,155.87x = 201,813,390.93
  5. Step 5: Solve for x
    x = 201,813,390.93/21,155.87
  6. Step 6: Final answer
    x = 9,539.36

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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.