Home / 21,134.16-29,165.14-11,702.72

Finding the Fourth Proportional to 21,134.16, 29,165.14 and 11,702.72

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Solution

The fourth proportional to 21,134.16, 29,165.14 and 11,702.72 is: 16,149.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,134.16 : 29,165.14 = 11,702.72 : x
  2. Step 2: Convert to fraction form
    21,134.16/29,165.14 = 11,702.72/x
  3. Step 3: Cross multiply
    21,134.16x = 29,165.14 × 11,702.72
  4. Step 4: Simplify right side
    21,134.16x = 341,311,379.52
  5. Step 5: Solve for x
    x = 341,311,379.52/21,134.16
  6. Step 6: Final answer
    x = 16,149.75

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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.