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Finding the Fourth Proportional to 13,389.40, 20,069.70 and 5,066.20

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Solution

The fourth proportional to 13,389.40, 20,069.70 and 5,066.20 is: 7,593.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,389.40 : 20,069.70 = 5,066.20 : x
  2. Step 2: Convert to fraction form
    13,389.40/20,069.70 = 5,066.20/x
  3. Step 3: Cross multiply
    13,389.40x = 20,069.70 × 5,066.20
  4. Step 4: Simplify right side
    13,389.40x = 101,677,114.14
  5. Step 5: Solve for x
    x = 101,677,114.14/13,389.40
  6. Step 6: Final answer
    x = 7,593.85

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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.