Home / 21,141.08-29,174.64-11,709.66

Finding the Fourth Proportional to 21,141.08, 29,174.64 and 11,709.66

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Solution

The fourth proportional to 21,141.08, 29,174.64 and 11,709.66 is: 16,159.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,141.08 : 29,174.64 = 11,709.66 : x
  2. Step 2: Convert to fraction form
    21,141.08/29,174.64 = 11,709.66/x
  3. Step 3: Cross multiply
    21,141.08x = 29,174.64 × 11,709.66
  4. Step 4: Simplify right side
    21,141.08x = 341,625,115.02
  5. Step 5: Solve for x
    x = 341,625,115.02/21,141.08
  6. Step 6: Final answer
    x = 16,159.30

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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.