Home / 20,309.60-30,465.02-5,518.83

Finding the Fourth Proportional to 20,309.60, 30,465.02 and 5,518.83

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Solution

The fourth proportional to 20,309.60, 30,465.02 and 5,518.83 is: 8,278.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,309.60 : 30,465.02 = 5,518.83 : x
  2. Step 2: Convert to fraction form
    20,309.60/30,465.02 = 5,518.83/x
  3. Step 3: Cross multiply
    20,309.60x = 30,465.02 × 5,518.83
  4. Step 4: Simplify right side
    20,309.60x = 168,131,280.12
  5. Step 5: Solve for x
    x = 168,131,280.12/20,309.60
  6. Step 6: Final answer
    x = 8,278.41

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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.