Home / 11,213.90-16,820.85-10,100.30

Finding the Fourth Proportional to 11,213.90, 16,820.85 and 10,100.30

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Solution

The fourth proportional to 11,213.90, 16,820.85 and 10,100.30 is: 15,150.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,213.90 : 16,820.85 = 10,100.30 : x
  2. Step 2: Convert to fraction form
    11,213.90/16,820.85 = 10,100.30/x
  3. Step 3: Cross multiply
    11,213.90x = 16,820.85 × 10,100.30
  4. Step 4: Simplify right side
    11,213.90x = 169,895,631.26
  5. Step 5: Solve for x
    x = 169,895,631.26/11,213.90
  6. Step 6: Final answer
    x = 15,150.45

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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.