Home / 20,594.50-28,420.48-11,163.10

Finding the Fourth Proportional to 20,594.50, 28,420.48 and 11,163.10

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Solution

The fourth proportional to 20,594.50, 28,420.48 and 11,163.10 is: 15,405.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,594.50 : 28,420.48 = 11,163.10 : x
  2. Step 2: Convert to fraction form
    20,594.50/28,420.48 = 11,163.10/x
  3. Step 3: Cross multiply
    20,594.50x = 28,420.48 × 11,163.10
  4. Step 4: Simplify right side
    20,594.50x = 317,260,660.29
  5. Step 5: Solve for x
    x = 317,260,660.29/20,594.50
  6. Step 6: Final answer
    x = 15,405.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.