Home / 20,723.22-28,598.31-11,291.76

Finding the Fourth Proportional to 20,723.22, 28,598.31 and 11,291.76

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Solution

The fourth proportional to 20,723.22, 28,598.31 and 11,291.76 is: 15,582.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,723.22 : 28,598.31 = 11,291.76 : x
  2. Step 2: Convert to fraction form
    20,723.22/28,598.31 = 11,291.76/x
  3. Step 3: Cross multiply
    20,723.22x = 28,598.31 × 11,291.76
  4. Step 4: Simplify right side
    20,723.22x = 322,925,252.93
  5. Step 5: Solve for x
    x = 322,925,252.93/20,723.22
  6. Step 6: Final answer
    x = 15,582.77

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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.