Home / 20,544.36-30,800.40-8,688.43

Finding the Fourth Proportional to 20,544.36, 30,800.40 and 8,688.43

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Solution

The fourth proportional to 20,544.36, 30,800.40 and 8,688.43 is: 13,025.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,544.36 : 30,800.40 = 8,688.43 : x
  2. Step 2: Convert to fraction form
    20,544.36/30,800.40 = 8,688.43/x
  3. Step 3: Cross multiply
    20,544.36x = 30,800.40 × 8,688.43
  4. Step 4: Simplify right side
    20,544.36x = 267,607,119.37
  5. Step 5: Solve for x
    x = 267,607,119.37/20,544.36
  6. Step 6: Final answer
    x = 13,025.82

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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.