Home / 10,170.20-14,099.80-9,809.34

Finding the Fourth Proportional to 10,170.20, 14,099.80 and 9,809.34

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Solution

The fourth proportional to 10,170.20, 14,099.80 and 9,809.34 is: 13,599.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,170.20 : 14,099.80 = 9,809.34 : x
  2. Step 2: Convert to fraction form
    10,170.20/14,099.80 = 9,809.34/x
  3. Step 3: Cross multiply
    10,170.20x = 14,099.80 × 9,809.34
  4. Step 4: Simplify right side
    10,170.20x = 138,309,732.13
  5. Step 5: Solve for x
    x = 138,309,732.13/10,170.20
  6. Step 6: Final answer
    x = 13,599.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.