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Finding the Fourth Proportional to 26,009.50, 35,929.84 and 20,697.52

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Solution

The fourth proportional to 26,009.50, 35,929.84 and 20,697.52 is: 28,591.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,009.50 : 35,929.84 = 20,697.52 : x
  2. Step 2: Convert to fraction form
    26,009.50/35,929.84 = 20,697.52/x
  3. Step 3: Cross multiply
    26,009.50x = 35,929.84 × 20,697.52
  4. Step 4: Simplify right side
    26,009.50x = 743,658,402.35
  5. Step 5: Solve for x
    x = 743,658,402.35/26,009.50
  6. Step 6: Final answer
    x = 28,591.80

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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.