Home / 20,216.60-30,324.90-7,070.30

Finding the Fourth Proportional to 20,216.60, 30,324.90 and 7,070.30

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Solution

The fourth proportional to 20,216.60, 30,324.90 and 7,070.30 is: 10,605.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,216.60 : 30,324.90 = 7,070.30 : x
  2. Step 2: Convert to fraction form
    20,216.60/30,324.90 = 7,070.30/x
  3. Step 3: Cross multiply
    20,216.60x = 30,324.90 × 7,070.30
  4. Step 4: Simplify right side
    20,216.60x = 214,406,140.47
  5. Step 5: Solve for x
    x = 214,406,140.47/20,216.60
  6. Step 6: Final answer
    x = 10,605.45

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Similar ratio
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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.