Home / 21,045.72-31,568.58-5,465.64

Finding the Fourth Proportional to 21,045.72, 31,568.58 and 5,465.64

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Solution

The fourth proportional to 21,045.72, 31,568.58 and 5,465.64 is: 8,198.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,045.72 : 31,568.58 = 5,465.64 : x
  2. Step 2: Convert to fraction form
    21,045.72/31,568.58 = 5,465.64/x
  3. Step 3: Cross multiply
    21,045.72x = 31,568.58 × 5,465.64
  4. Step 4: Simplify right side
    21,045.72x = 172,542,493.59
  5. Step 5: Solve for x
    x = 172,542,493.59/21,045.72
  6. Step 6: Final answer
    x = 8,198.46

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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.