Home / 20,995.84-31,494.40-8,684.80

Finding the Fourth Proportional to 20,995.84, 31,494.40 and 8,684.80

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Solution

The fourth proportional to 20,995.84, 31,494.40 and 8,684.80 is: 13,027.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,995.84 : 31,494.40 = 8,684.80 : x
  2. Step 2: Convert to fraction form
    20,995.84/31,494.40 = 8,684.80/x
  3. Step 3: Cross multiply
    20,995.84x = 31,494.40 × 8,684.80
  4. Step 4: Simplify right side
    20,995.84x = 273,522,565.12
  5. Step 5: Solve for x
    x = 273,522,565.12/20,995.84
  6. Step 6: Final answer
    x = 13,027.46

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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.