Home / 21,222.36-31,834.89-7,183.80

Finding the Fourth Proportional to 21,222.36, 31,834.89 and 7,183.80

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Solution

The fourth proportional to 21,222.36, 31,834.89 and 7,183.80 is: 10,776.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,222.36 : 31,834.89 = 7,183.80 : x
  2. Step 2: Convert to fraction form
    21,222.36/31,834.89 = 7,183.80/x
  3. Step 3: Cross multiply
    21,222.36x = 31,834.89 × 7,183.80
  4. Step 4: Simplify right side
    21,222.36x = 228,695,482.78
  5. Step 5: Solve for x
    x = 228,695,482.78/21,222.36
  6. Step 6: Final answer
    x = 10,776.16

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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.