Home / 21,132.42-31,703.90-6,341.61

Finding the Fourth Proportional to 21,132.42, 31,703.90 and 6,341.61

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Solution

The fourth proportional to 21,132.42, 31,703.90 and 6,341.61 is: 9,513.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,132.42 : 31,703.90 = 6,341.61 : x
  2. Step 2: Convert to fraction form
    21,132.42/31,703.90 = 6,341.61/x
  3. Step 3: Cross multiply
    21,132.42x = 31,703.90 × 6,341.61
  4. Step 4: Simplify right side
    21,132.42x = 201,053,737.57
  5. Step 5: Solve for x
    x = 201,053,737.57/21,132.42
  6. Step 6: Final answer
    x = 9,513.99

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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.