Home / 20,308.13-30,458.60-5,518.20

Finding the Fourth Proportional to 20,308.13, 30,458.60 and 5,518.20

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Solution

The fourth proportional to 20,308.13, 30,458.60 and 5,518.20 is: 8,276.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,308.13 : 30,458.60 = 5,518.20 : x
  2. Step 2: Convert to fraction form
    20,308.13/30,458.60 = 5,518.20/x
  3. Step 3: Cross multiply
    20,308.13x = 30,458.60 × 5,518.20
  4. Step 4: Simplify right side
    20,308.13x = 168,076,618.93
  5. Step 5: Solve for x
    x = 168,076,618.93/20,308.13
  6. Step 6: Final answer
    x = 8,276.32

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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.