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Finding the Fourth Proportional to 10,692.80, 15,926.44 and 10,213.08

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Solution

The fourth proportional to 10,692.80, 15,926.44 and 10,213.08 is: 15,211.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,692.80 : 15,926.44 = 10,213.08 : x
  2. Step 2: Convert to fraction form
    10,692.80/15,926.44 = 10,213.08/x
  3. Step 3: Cross multiply
    10,692.80x = 15,926.44 × 10,213.08
  4. Step 4: Simplify right side
    10,692.80x = 162,658,005.84
  5. Step 5: Solve for x
    x = 162,658,005.84/10,692.80
  6. Step 6: Final answer
    x = 15,211.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.