Home / 13,847.16-20,771.28-3,987.84

Finding the Fourth Proportional to 13,847.16, 20,771.28 and 3,987.84

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Solution

The fourth proportional to 13,847.16, 20,771.28 and 3,987.84 is: 5,981.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,847.16 : 20,771.28 = 3,987.84 : x
  2. Step 2: Convert to fraction form
    13,847.16/20,771.28 = 3,987.84/x
  3. Step 3: Cross multiply
    13,847.16x = 20,771.28 × 3,987.84
  4. Step 4: Simplify right side
    13,847.16x = 82,832,541.24
  5. Step 5: Solve for x
    x = 82,832,541.24/13,847.16
  6. Step 6: Final answer
    x = 5,981.92

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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.