Home / 21,269.52-29,369.16-13,719.60

Finding the Fourth Proportional to 21,269.52, 29,369.16 and 13,719.60

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Solution

The fourth proportional to 21,269.52, 29,369.16 and 13,719.60 is: 18,944.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,269.52 : 29,369.16 = 13,719.60 : x
  2. Step 2: Convert to fraction form
    21,269.52/29,369.16 = 13,719.60/x
  3. Step 3: Cross multiply
    21,269.52x = 29,369.16 × 13,719.60
  4. Step 4: Simplify right side
    21,269.52x = 402,933,127.54
  5. Step 5: Solve for x
    x = 402,933,127.54/21,269.52
  6. Step 6: Final answer
    x = 18,944.16

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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.