Home / 20,432.45-30,646.37-5,643.47

Finding the Fourth Proportional to 20,432.45, 30,646.37 and 5,643.47

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Solution

The fourth proportional to 20,432.45, 30,646.37 and 5,643.47 is: 8,464.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,432.45 : 30,646.37 = 5,643.47 : x
  2. Step 2: Convert to fraction form
    20,432.45/30,646.37 = 5,643.47/x
  3. Step 3: Cross multiply
    20,432.45x = 30,646.37 × 5,643.47
  4. Step 4: Simplify right side
    20,432.45x = 172,951,960.43
  5. Step 5: Solve for x
    x = 172,951,960.43/20,432.45
  6. Step 6: Final answer
    x = 8,464.57

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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.