Home / 11,140.90-16,691.10-8,816.20

Finding the Fourth Proportional to 11,140.90, 16,691.10 and 8,816.20

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Solution

The fourth proportional to 11,140.90, 16,691.10 and 8,816.20 is: 13,208.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,140.90 : 16,691.10 = 8,816.20 : x
  2. Step 2: Convert to fraction form
    11,140.90/16,691.10 = 8,816.20/x
  3. Step 3: Cross multiply
    11,140.90x = 16,691.10 × 8,816.20
  4. Step 4: Simplify right side
    11,140.90x = 147,152,075.82
  5. Step 5: Solve for x
    x = 147,152,075.82/11,140.90
  6. Step 6: Final answer
    x = 13,208.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.