Home / 21,042.76-29,026.20-12,539.29

Finding the Fourth Proportional to 21,042.76, 29,026.20 and 12,539.29

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Solution

The fourth proportional to 21,042.76, 29,026.20 and 12,539.29 is: 17,296.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,042.76 : 29,026.20 = 12,539.29 : x
  2. Step 2: Convert to fraction form
    21,042.76/29,026.20 = 12,539.29/x
  3. Step 3: Cross multiply
    21,042.76x = 29,026.20 × 12,539.29
  4. Step 4: Simplify right side
    21,042.76x = 363,967,939.40
  5. Step 5: Solve for x
    x = 363,967,939.40/21,042.76
  6. Step 6: Final answer
    x = 17,296.59

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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.