Home / 15,910.49-21,959.70-9,196.40

Finding the Fourth Proportional to 15,910.49, 21,959.70 and 9,196.40

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Solution

The fourth proportional to 15,910.49, 21,959.70 and 9,196.40 is: 12,692.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,910.49 : 21,959.70 = 9,196.40 : x
  2. Step 2: Convert to fraction form
    15,910.49/21,959.70 = 9,196.40/x
  3. Step 3: Cross multiply
    15,910.49x = 21,959.70 × 9,196.40
  4. Step 4: Simplify right side
    15,910.49x = 201,950,185.08
  5. Step 5: Solve for x
    x = 201,950,185.08/15,910.49
  6. Step 6: Final answer
    x = 12,692.90

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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.