Home / 21,081.24-29,092.68-11,521.50

Finding the Fourth Proportional to 21,081.24, 29,092.68 and 11,521.50

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Solution

The fourth proportional to 21,081.24, 29,092.68 and 11,521.50 is: 15,899.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,081.24 : 29,092.68 = 11,521.50 : x
  2. Step 2: Convert to fraction form
    21,081.24/29,092.68 = 11,521.50/x
  3. Step 3: Cross multiply
    21,081.24x = 29,092.68 × 11,521.50
  4. Step 4: Simplify right side
    21,081.24x = 335,191,312.62
  5. Step 5: Solve for x
    x = 335,191,312.62/21,081.24
  6. Step 6: Final answer
    x = 15,899.98

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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.