Home / 20,378.13-30,563.93-5,583.61

Finding the Fourth Proportional to 20,378.13, 30,563.93 and 5,583.61

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Solution

The fourth proportional to 20,378.13, 30,563.93 and 5,583.61 is: 8,374.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,378.13 : 30,563.93 = 5,583.61 : x
  2. Step 2: Convert to fraction form
    20,378.13/30,563.93 = 5,583.61/x
  3. Step 3: Cross multiply
    20,378.13x = 30,563.93 × 5,583.61
  4. Step 4: Simplify right side
    20,378.13x = 170,657,031.39
  5. Step 5: Solve for x
    x = 170,657,031.39/20,378.13
  6. Step 6: Final answer
    x = 8,374.52

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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.