Home / 20,802.76-28,708.23-11,371.93

Finding the Fourth Proportional to 20,802.76, 28,708.23 and 11,371.93

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Solution

The fourth proportional to 20,802.76, 28,708.23 and 11,371.93 is: 15,693.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802.76 : 28,708.23 = 11,371.93 : x
  2. Step 2: Convert to fraction form
    20,802.76/28,708.23 = 11,371.93/x
  3. Step 3: Cross multiply
    20,802.76x = 28,708.23 × 11,371.93
  4. Step 4: Simplify right side
    20,802.76x = 326,467,981.98
  5. Step 5: Solve for x
    x = 326,467,981.98/20,802.76
  6. Step 6: Final answer
    x = 15,693.49

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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.