Home / 21,148.96-31,737.80-11,295.31

Finding the Fourth Proportional to 21,148.96, 31,737.80 and 11,295.31

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Solution

The fourth proportional to 21,148.96, 31,737.80 and 11,295.31 is: 16,950.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,148.96 : 31,737.80 = 11,295.31 : x
  2. Step 2: Convert to fraction form
    21,148.96/31,737.80 = 11,295.31/x
  3. Step 3: Cross multiply
    21,148.96x = 31,737.80 × 11,295.31
  4. Step 4: Simplify right side
    21,148.96x = 358,488,233.24
  5. Step 5: Solve for x
    x = 358,488,233.24/21,148.96
  6. Step 6: Final answer
    x = 16,950.63

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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.