Home / 13,404.87-20,086.80-7,165.77

Finding the Fourth Proportional to 13,404.87, 20,086.80 and 7,165.77

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Solution

The fourth proportional to 13,404.87, 20,086.80 and 7,165.77 is: 10,737.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,404.87 : 20,086.80 = 7,165.77 : x
  2. Step 2: Convert to fraction form
    13,404.87/20,086.80 = 7,165.77/x
  3. Step 3: Cross multiply
    13,404.87x = 20,086.80 × 7,165.77
  4. Step 4: Simplify right side
    13,404.87x = 143,937,388.84
  5. Step 5: Solve for x
    x = 143,937,388.84/13,404.87
  6. Step 6: Final answer
    x = 10,737.69

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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.