Home / 10,660.24-15,991.20-3,643.60

Finding the Fourth Proportional to 10,660.24, 15,991.20 and 3,643.60

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Solution

The fourth proportional to 10,660.24, 15,991.20 and 3,643.60 is: 5,465.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,660.24 : 15,991.20 = 3,643.60 : x
  2. Step 2: Convert to fraction form
    10,660.24/15,991.20 = 3,643.60/x
  3. Step 3: Cross multiply
    10,660.24x = 15,991.20 × 3,643.60
  4. Step 4: Simplify right side
    10,660.24x = 58,265,536.32
  5. Step 5: Solve for x
    x = 58,265,536.32/10,660.24
  6. Step 6: Final answer
    x = 5,465.69

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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.