Home / 13,889.04-20,812.68-5,560.80

Finding the Fourth Proportional to 13,889.04, 20,812.68 and 5,560.80

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Solution

The fourth proportional to 13,889.04, 20,812.68 and 5,560.80 is: 8,332.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889.04 : 20,812.68 = 5,560.80 : x
  2. Step 2: Convert to fraction form
    13,889.04/20,812.68 = 5,560.80/x
  3. Step 3: Cross multiply
    13,889.04x = 20,812.68 × 5,560.80
  4. Step 4: Simplify right side
    13,889.04x = 115,735,150.94
  5. Step 5: Solve for x
    x = 115,735,150.94/13,889.04
  6. Step 6: Final answer
    x = 8,332.84

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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.