Home / 11,213.40-16,820.10-9,984.60

Finding the Fourth Proportional to 11,213.40, 16,820.10 and 9,984.60

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Solution

The fourth proportional to 11,213.40, 16,820.10 and 9,984.60 is: 14,976.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,213.40 : 16,820.10 = 9,984.60 : x
  2. Step 2: Convert to fraction form
    11,213.40/16,820.10 = 9,984.60/x
  3. Step 3: Cross multiply
    11,213.40x = 16,820.10 × 9,984.60
  4. Step 4: Simplify right side
    11,213.40x = 167,941,970.46
  5. Step 5: Solve for x
    x = 167,941,970.46/11,213.40
  6. Step 6: Final answer
    x = 14,976.90

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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.