Home / 31,646.61-43,653.24-20,891.57

Finding the Fourth Proportional to 31,646.61, 43,653.24 and 20,891.57

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Solution

The fourth proportional to 31,646.61, 43,653.24 and 20,891.57 is: 28,817.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,646.61 : 43,653.24 = 20,891.57 : x
  2. Step 2: Convert to fraction form
    31,646.61/43,653.24 = 20,891.57/x
  3. Step 3: Cross multiply
    31,646.61x = 43,653.24 × 20,891.57
  4. Step 4: Simplify right side
    31,646.61x = 911,984,500.92
  5. Step 5: Solve for x
    x = 911,984,500.92/31,646.61
  6. Step 6: Final answer
    x = 28,817.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.