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Finding the Fourth Proportional to 13,357.80, 20,019.00 and 7,104.35

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Solution

The fourth proportional to 13,357.80, 20,019.00 and 7,104.35 is: 10,647.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,357.80 : 20,019.00 = 7,104.35 : x
  2. Step 2: Convert to fraction form
    13,357.80/20,019.00 = 7,104.35/x
  3. Step 3: Cross multiply
    13,357.80x = 20,019.00 × 7,104.35
  4. Step 4: Simplify right side
    13,357.80x = 142,221,847.03
  5. Step 5: Solve for x
    x = 142,221,847.03/13,357.80
  6. Step 6: Final answer
    x = 10,647.10

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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.