Home / 15,455.70-21,329.19-9,086.94

Finding the Fourth Proportional to 15,455.70, 21,329.19 and 9,086.94

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Solution

The fourth proportional to 15,455.70, 21,329.19 and 9,086.94 is: 12,540.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,455.70 : 21,329.19 = 9,086.94 : x
  2. Step 2: Convert to fraction form
    15,455.70/21,329.19 = 9,086.94/x
  3. Step 3: Cross multiply
    15,455.70x = 21,329.19 × 9,086.94
  4. Step 4: Simplify right side
    15,455.70x = 193,817,069.78
  5. Step 5: Solve for x
    x = 193,817,069.78/15,455.70
  6. Step 6: Final answer
    x = 12,540.17

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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.