Home / 20,723.20-28,598.08-11,291.52

Finding the Fourth Proportional to 20,723.20, 28,598.08 and 11,291.52

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Solution

The fourth proportional to 20,723.20, 28,598.08 and 11,291.52 is: 15,582.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,723.20 : 28,598.08 = 11,291.52 : x
  2. Step 2: Convert to fraction form
    20,723.20/28,598.08 = 11,291.52/x
  3. Step 3: Cross multiply
    20,723.20x = 28,598.08 × 11,291.52
  4. Step 4: Simplify right side
    20,723.20x = 322,915,792.28
  5. Step 5: Solve for x
    x = 322,915,792.28/20,723.20
  6. Step 6: Final answer
    x = 15,582.33

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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.