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Finding the Fourth Proportional to 26,010.80, 38,929.80 and 18,234.80

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Solution

The fourth proportional to 26,010.80, 38,929.80 and 18,234.80 is: 27,291.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,010.80 : 38,929.80 = 18,234.80 : x
  2. Step 2: Convert to fraction form
    26,010.80/38,929.80 = 18,234.80/x
  3. Step 3: Cross multiply
    26,010.80x = 38,929.80 × 18,234.80
  4. Step 4: Simplify right side
    26,010.80x = 709,877,117.04
  5. Step 5: Solve for x
    x = 709,877,117.04/26,010.80
  6. Step 6: Final answer
    x = 27,291.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.