Home / 15,455.98-21,329.43-8,382.46

Finding the Fourth Proportional to 15,455.98, 21,329.43 and 8,382.46

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Solution

The fourth proportional to 15,455.98, 21,329.43 and 8,382.46 is: 11,567.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,455.98 : 21,329.43 = 8,382.46 : x
  2. Step 2: Convert to fraction form
    15,455.98/21,329.43 = 8,382.46/x
  3. Step 3: Cross multiply
    15,455.98x = 21,329.43 × 8,382.46
  4. Step 4: Simplify right side
    15,455.98x = 178,793,093.80
  5. Step 5: Solve for x
    x = 178,793,093.80/15,455.98
  6. Step 6: Final answer
    x = 11,567.89

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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.