Home / 13,565.05-20,330.25-11,802.69

Finding the Fourth Proportional to 13,565.05, 20,330.25 and 11,802.69

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Solution

The fourth proportional to 13,565.05, 20,330.25 and 11,802.69 is: 17,688.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,565.05 : 20,330.25 = 11,802.69 : x
  2. Step 2: Convert to fraction form
    13,565.05/20,330.25 = 11,802.69/x
  3. Step 3: Cross multiply
    13,565.05x = 20,330.25 × 11,802.69
  4. Step 4: Simplify right side
    13,565.05x = 239,951,638.37
  5. Step 5: Solve for x
    x = 239,951,638.37/13,565.05
  6. Step 6: Final answer
    x = 17,688.96

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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.