Home / 13,643.43-20,465.75-5,322.70

Finding the Fourth Proportional to 13,643.43, 20,465.75 and 5,322.70

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Solution

The fourth proportional to 13,643.43, 20,465.75 and 5,322.70 is: 7,984.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,643.43 : 20,465.75 = 5,322.70 : x
  2. Step 2: Convert to fraction form
    13,643.43/20,465.75 = 5,322.70/x
  3. Step 3: Cross multiply
    13,643.43x = 20,465.75 × 5,322.70
  4. Step 4: Simplify right side
    13,643.43x = 108,933,047.53
  5. Step 5: Solve for x
    x = 108,933,047.53/13,643.43
  6. Step 6: Final answer
    x = 7,984.29

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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.