Home / 35,135.40-52,712.10-20,317.80

Finding the Fourth Proportional to 35,135.40, 52,712.10 and 20,317.80

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Solution

The fourth proportional to 35,135.40, 52,712.10 and 20,317.80 is: 30,481.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,135.40 : 52,712.10 = 20,317.80 : x
  2. Step 2: Convert to fraction form
    35,135.40/52,712.10 = 20,317.80/x
  3. Step 3: Cross multiply
    35,135.40x = 52,712.10 × 20,317.80
  4. Step 4: Simplify right side
    35,135.40x = 1,070,993,905.38
  5. Step 5: Solve for x
    x = 1,070,993,905.38/35,135.40
  6. Step 6: Final answer
    x = 30,481.90

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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.