Home / 20,628.50-28,464.96-11,552.60

Finding the Fourth Proportional to 20,628.50, 28,464.96 and 11,552.60

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Solution

The fourth proportional to 20,628.50, 28,464.96 and 11,552.60 is: 15,941.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,628.50 : 28,464.96 = 11,552.60 : x
  2. Step 2: Convert to fraction form
    20,628.50/28,464.96 = 11,552.60/x
  3. Step 3: Cross multiply
    20,628.50x = 28,464.96 × 11,552.60
  4. Step 4: Simplify right side
    20,628.50x = 328,844,154.57
  5. Step 5: Solve for x
    x = 328,844,154.57/20,628.50
  6. Step 6: Final answer
    x = 15,941.26

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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.