Home / 19,920.15-29,890.82-8,834.80

Finding the Fourth Proportional to 19,920.15, 29,890.82 and 8,834.80

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Solution

The fourth proportional to 19,920.15, 29,890.82 and 8,834.80 is: 13,256.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,920.15 : 29,890.82 = 8,834.80 : x
  2. Step 2: Convert to fraction form
    19,920.15/29,890.82 = 8,834.80/x
  3. Step 3: Cross multiply
    19,920.15x = 29,890.82 × 8,834.80
  4. Step 4: Simplify right side
    19,920.15x = 264,079,335.87
  5. Step 5: Solve for x
    x = 264,079,335.87/19,920.15
  6. Step 6: Final answer
    x = 13,256.89

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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.