Home / 21,067.18-31,608.45-7,217.58

Finding the Fourth Proportional to 21,067.18, 31,608.45 and 7,217.58

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Solution

The fourth proportional to 21,067.18, 31,608.45 and 7,217.58 is: 10,829.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,067.18 : 31,608.45 = 7,217.58 : x
  2. Step 2: Convert to fraction form
    21,067.18/31,608.45 = 7,217.58/x
  3. Step 3: Cross multiply
    21,067.18x = 31,608.45 × 7,217.58
  4. Step 4: Simplify right side
    21,067.18x = 228,136,516.55
  5. Step 5: Solve for x
    x = 228,136,516.55/21,067.18
  6. Step 6: Final answer
    x = 10,829.00

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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.