Home / 21,402.08-29,536.32-11,971.52

Finding the Fourth Proportional to 21,402.08, 29,536.32 and 11,971.52

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Solution

The fourth proportional to 21,402.08, 29,536.32 and 11,971.52 is: 16,521.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,402.08 : 29,536.32 = 11,971.52 : x
  2. Step 2: Convert to fraction form
    21,402.08/29,536.32 = 11,971.52/x
  3. Step 3: Cross multiply
    21,402.08x = 29,536.32 × 11,971.52
  4. Step 4: Simplify right side
    21,402.08x = 353,594,645.61
  5. Step 5: Solve for x
    x = 353,594,645.61/21,402.08
  6. Step 6: Final answer
    x = 16,521.51

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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.