Home / 35,929.40-53,821.20-20,328.80

Finding the Fourth Proportional to 35,929.40, 53,821.20 and 20,328.80

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Solution

The fourth proportional to 35,929.40, 53,821.20 and 20,328.80 is: 30,451.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,929.40 : 53,821.20 = 20,328.80 : x
  2. Step 2: Convert to fraction form
    35,929.40/53,821.20 = 20,328.80/x
  3. Step 3: Cross multiply
    35,929.40x = 53,821.20 × 20,328.80
  4. Step 4: Simplify right side
    35,929.40x = 1,094,120,410.56
  5. Step 5: Solve for x
    x = 1,094,120,410.56/35,929.40
  6. Step 6: Final answer
    x = 30,451.95

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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.