Home / 20,066.90-30,118.85-10,213.25

Finding the Fourth Proportional to 20,066.90, 30,118.85 and 10,213.25

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Solution

The fourth proportional to 20,066.90, 30,118.85 and 10,213.25 is: 15,329.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,066.90 : 30,118.85 = 10,213.25 : x
  2. Step 2: Convert to fraction form
    20,066.90/30,118.85 = 10,213.25/x
  3. Step 3: Cross multiply
    20,066.90x = 30,118.85 × 10,213.25
  4. Step 4: Simplify right side
    20,066.90x = 307,611,344.76
  5. Step 5: Solve for x
    x = 307,611,344.76/20,066.90
  6. Step 6: Final answer
    x = 15,329.29

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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.