Home / 20,723.28-28,597.36-11,291.68

Finding the Fourth Proportional to 20,723.28, 28,597.36 and 11,291.68

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Solution

The fourth proportional to 20,723.28, 28,597.36 and 11,291.68 is: 15,582.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,723.28 : 28,597.36 = 11,291.68 : x
  2. Step 2: Convert to fraction form
    20,723.28/28,597.36 = 11,291.68/x
  3. Step 3: Cross multiply
    20,723.28x = 28,597.36 × 11,291.68
  4. Step 4: Simplify right side
    20,723.28x = 322,912,237.96
  5. Step 5: Solve for x
    x = 322,912,237.96/20,723.28
  6. Step 6: Final answer
    x = 15,582.10

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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.