Home / 13,906.42-20,860.56-5,585.36

Finding the Fourth Proportional to 13,906.42, 20,860.56 and 5,585.36

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Solution

The fourth proportional to 13,906.42, 20,860.56 and 5,585.36 is: 8,378.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,906.42 : 20,860.56 = 5,585.36 : x
  2. Step 2: Convert to fraction form
    13,906.42/20,860.56 = 5,585.36/x
  3. Step 3: Cross multiply
    13,906.42x = 20,860.56 × 5,585.36
  4. Step 4: Simplify right side
    13,906.42x = 116,513,737.40
  5. Step 5: Solve for x
    x = 116,513,737.40/13,906.42
  6. Step 6: Final answer
    x = 8,378.41

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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.