Home / 10,972.16-16,380.16-10,511.36

Finding the Fourth Proportional to 10,972.16, 16,380.16 and 10,511.36

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Solution

The fourth proportional to 10,972.16, 16,380.16 and 10,511.36 is: 15,692.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,972.16 : 16,380.16 = 10,511.36 : x
  2. Step 2: Convert to fraction form
    10,972.16/16,380.16 = 10,511.36/x
  3. Step 3: Cross multiply
    10,972.16x = 16,380.16 × 10,511.36
  4. Step 4: Simplify right side
    10,972.16x = 172,177,758.62
  5. Step 5: Solve for x
    x = 172,177,758.62/10,972.16
  6. Step 6: Final answer
    x = 15,692.24

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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.