Home / 20,723.27-28,598.13-11,291.63

Finding the Fourth Proportional to 20,723.27, 28,598.13 and 11,291.63

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Solution

The fourth proportional to 20,723.27, 28,598.13 and 11,291.63 is: 15,582.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,723.27 : 28,598.13 = 11,291.63 : x
  2. Step 2: Convert to fraction form
    20,723.27/28,598.13 = 11,291.63/x
  3. Step 3: Cross multiply
    20,723.27x = 28,598.13 × 11,291.63
  4. Step 4: Simplify right side
    20,723.27x = 322,919,359.66
  5. Step 5: Solve for x
    x = 322,919,359.66/20,723.27
  6. Step 6: Final answer
    x = 15,582.46

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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.