Home / 21,834.36-30,140.10-14,781.69

Finding the Fourth Proportional to 21,834.36, 30,140.10 and 14,781.69

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Solution

The fourth proportional to 21,834.36, 30,140.10 and 14,781.69 is: 20,404.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,834.36 : 30,140.10 = 14,781.69 : x
  2. Step 2: Convert to fraction form
    21,834.36/30,140.10 = 14,781.69/x
  3. Step 3: Cross multiply
    21,834.36x = 30,140.10 × 14,781.69
  4. Step 4: Simplify right side
    21,834.36x = 445,521,614.77
  5. Step 5: Solve for x
    x = 445,521,614.77/21,834.36
  6. Step 6: Final answer
    x = 20,404.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.