Home / 13,643.15-20,465.13-5,322.83

Finding the Fourth Proportional to 13,643.15, 20,465.13 and 5,322.83

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Solution

The fourth proportional to 13,643.15, 20,465.13 and 5,322.83 is: 7,984.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,643.15 : 20,465.13 = 5,322.83 : x
  2. Step 2: Convert to fraction form
    13,643.15/20,465.13 = 5,322.83/x
  3. Step 3: Cross multiply
    13,643.15x = 20,465.13 × 5,322.83
  4. Step 4: Simplify right side
    13,643.15x = 108,932,305.59
  5. Step 5: Solve for x
    x = 108,932,305.59/13,643.15
  6. Step 6: Final answer
    x = 7,984.40

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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.