Home / 21,134.16-29,174.52-13,480.68

Finding the Fourth Proportional to 21,134.16, 29,174.52 and 13,480.68

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Solution

The fourth proportional to 21,134.16, 29,174.52 and 13,480.68 is: 18,609.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,134.16 : 29,174.52 = 13,480.68 : x
  2. Step 2: Convert to fraction form
    21,134.16/29,174.52 = 13,480.68/x
  3. Step 3: Cross multiply
    21,134.16x = 29,174.52 × 13,480.68
  4. Step 4: Simplify right side
    21,134.16x = 393,292,368.27
  5. Step 5: Solve for x
    x = 393,292,368.27/21,134.16
  6. Step 6: Final answer
    x = 18,609.32

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1.5x scale

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.