Home / 21,542.36-29,719.32-13,154

Finding the Fourth Proportional to 21,542.36, 29,719.32 and 13,154

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Solution

The fourth proportional to 21,542.36, 29,719.32 and 13,154 is: 18,146.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,542.36 : 29,719.32 = 13,154 : x
  2. Step 2: Convert to fraction form
    21,542.36/29,719.32 = 13,154/x
  3. Step 3: Cross multiply
    21,542.36x = 29,719.32 × 13,154
  4. Step 4: Simplify right side
    21,542.36x = 390,927,935.28
  5. Step 5: Solve for x
    x = 390,927,935.28/21,542.36
  6. Step 6: Final answer
    x = 18,146.94

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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.