Home / 15,550.09-21,458.31-8,834.78

Finding the Fourth Proportional to 15,550.09, 21,458.31 and 8,834.78

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Solution

The fourth proportional to 15,550.09, 21,458.31 and 8,834.78 is: 12,191.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,550.09 : 21,458.31 = 8,834.78 : x
  2. Step 2: Convert to fraction form
    15,550.09/21,458.31 = 8,834.78/x
  3. Step 3: Cross multiply
    15,550.09x = 21,458.31 × 8,834.78
  4. Step 4: Simplify right side
    15,550.09x = 189,579,448.02
  5. Step 5: Solve for x
    x = 189,579,448.02/15,550.09
  6. Step 6: Final answer
    x = 12,191.54

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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.