Home / 15,455.12-21,329.73-8,651.61

Finding the Fourth Proportional to 15,455.12, 21,329.73 and 8,651.61

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Solution

The fourth proportional to 15,455.12, 21,329.73 and 8,651.61 is: 11,940.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,455.12 : 21,329.73 = 8,651.61 : x
  2. Step 2: Convert to fraction form
    15,455.12/21,329.73 = 8,651.61/x
  3. Step 3: Cross multiply
    15,455.12x = 21,329.73 × 8,651.61
  4. Step 4: Simplify right side
    15,455.12x = 184,536,505.37
  5. Step 5: Solve for x
    x = 184,536,505.37/15,455.12
  6. Step 6: Final answer
    x = 11,940.16

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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.