Home / 20,402.63-28,156.14-11,450.81

Finding the Fourth Proportional to 20,402.63, 28,156.14 and 11,450.81

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Solution

The fourth proportional to 20,402.63, 28,156.14 and 11,450.81 is: 15,802.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,402.63 : 28,156.14 = 11,450.81 : x
  2. Step 2: Convert to fraction form
    20,402.63/28,156.14 = 11,450.81/x
  3. Step 3: Cross multiply
    20,402.63x = 28,156.14 × 11,450.81
  4. Step 4: Simplify right side
    20,402.63x = 322,410,679.86
  5. Step 5: Solve for x
    x = 322,410,679.86/20,402.63
  6. Step 6: Final answer
    x = 15,802.41

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.