Home / 15,692.94-21,655.82-8,619.35

Finding the Fourth Proportional to 15,692.94, 21,655.82 and 8,619.35

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Solution

The fourth proportional to 15,692.94, 21,655.82 and 8,619.35 is: 11,894.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,692.94 : 21,655.82 = 8,619.35 : x
  2. Step 2: Convert to fraction form
    15,692.94/21,655.82 = 8,619.35/x
  3. Step 3: Cross multiply
    15,692.94x = 21,655.82 × 8,619.35
  4. Step 4: Simplify right side
    15,692.94x = 186,659,005.39
  5. Step 5: Solve for x
    x = 186,659,005.39/15,692.94
  6. Step 6: Final answer
    x = 11,894.46

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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.