Home / 17,128.48-23,638.08-13,396

Finding the Fourth Proportional to 17,128.48, 23,638.08 and 13,396

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Solution

The fourth proportional to 17,128.48, 23,638.08 and 13,396 is: 18,487.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,128.48 : 23,638.08 = 13,396 : x
  2. Step 2: Convert to fraction form
    17,128.48/23,638.08 = 13,396/x
  3. Step 3: Cross multiply
    17,128.48x = 23,638.08 × 13,396
  4. Step 4: Simplify right side
    17,128.48x = 316,655,719.68
  5. Step 5: Solve for x
    x = 316,655,719.68/17,128.48
  6. Step 6: Final answer
    x = 18,487.09

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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.