Home / 20,803.48-28,690.14-13,737.04

Finding the Fourth Proportional to 20,803.48, 28,690.14 and 13,737.04

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Solution

The fourth proportional to 20,803.48, 28,690.14 and 13,737.04 is: 18,944.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,803.48 : 28,690.14 = 13,737.04 : x
  2. Step 2: Convert to fraction form
    20,803.48/28,690.14 = 13,737.04/x
  3. Step 3: Cross multiply
    20,803.48x = 28,690.14 × 13,737.04
  4. Step 4: Simplify right side
    20,803.48x = 394,117,600.79
  5. Step 5: Solve for x
    x = 394,117,600.79/20,803.48
  6. Step 6: Final answer
    x = 18,944.79

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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.