Home / 20,484.23-30,726.93-11,128.73

Finding the Fourth Proportional to 20,484.23, 30,726.93 and 11,128.73

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Solution

The fourth proportional to 20,484.23, 30,726.93 and 11,128.73 is: 16,693.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,484.23 : 30,726.93 = 11,128.73 : x
  2. Step 2: Convert to fraction form
    20,484.23/30,726.93 = 11,128.73/x
  3. Step 3: Cross multiply
    20,484.23x = 30,726.93 × 11,128.73
  4. Step 4: Simplify right side
    20,484.23x = 341,951,707.70
  5. Step 5: Solve for x
    x = 341,951,707.70/20,484.23
  6. Step 6: Final answer
    x = 16,693.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.