Home / 20,066.72-30,101.51-6,918.90

Finding the Fourth Proportional to 20,066.72, 30,101.51 and 6,918.90

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Solution

The fourth proportional to 20,066.72, 30,101.51 and 6,918.90 is: 10,378.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,066.72 : 30,101.51 = 6,918.90 : x
  2. Step 2: Convert to fraction form
    20,066.72/30,101.51 = 6,918.90/x
  3. Step 3: Cross multiply
    20,066.72x = 30,101.51 × 6,918.90
  4. Step 4: Simplify right side
    20,066.72x = 208,269,302.94
  5. Step 5: Solve for x
    x = 208,269,302.94/20,066.72
  6. Step 6: Final answer
    x = 10,378.84

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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.