Home / 21,134.09-29,164.69-11,702.45

Finding the Fourth Proportional to 21,134.09, 29,164.69 and 11,702.45

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Solution

The fourth proportional to 21,134.09, 29,164.69 and 11,702.45 is: 16,149.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,134.09 : 29,164.69 = 11,702.45 : x
  2. Step 2: Convert to fraction form
    21,134.09/29,164.69 = 11,702.45/x
  3. Step 3: Cross multiply
    21,134.09x = 29,164.69 × 11,702.45
  4. Step 4: Simplify right side
    21,134.09x = 341,298,370.15
  5. Step 5: Solve for x
    x = 341,298,370.15/21,134.09
  6. Step 6: Final answer
    x = 16,149.19

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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.