Home / 20,662.08-28,513.71-11,230.62

Finding the Fourth Proportional to 20,662.08, 28,513.71 and 11,230.62

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Solution

The fourth proportional to 20,662.08, 28,513.71 and 11,230.62 is: 15,498.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,662.08 : 28,513.71 = 11,230.62 : x
  2. Step 2: Convert to fraction form
    20,662.08/28,513.71 = 11,230.62/x
  3. Step 3: Cross multiply
    20,662.08x = 28,513.71 × 11,230.62
  4. Step 4: Simplify right side
    20,662.08x = 320,226,641.80
  5. Step 5: Solve for x
    x = 320,226,641.80/20,662.08
  6. Step 6: Final answer
    x = 15,498.28

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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.