Home / 21,910.20-32,870.10-7,116.60

Finding the Fourth Proportional to 21,910.20, 32,870.10 and 7,116.60

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Solution

The fourth proportional to 21,910.20, 32,870.10 and 7,116.60 is: 10,676.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,910.20 : 32,870.10 = 7,116.60 : x
  2. Step 2: Convert to fraction form
    21,910.20/32,870.10 = 7,116.60/x
  3. Step 3: Cross multiply
    21,910.20x = 32,870.10 × 7,116.60
  4. Step 4: Simplify right side
    21,910.20x = 233,923,353.66
  5. Step 5: Solve for x
    x = 233,923,353.66/21,910.20
  6. Step 6: Final answer
    x = 10,676.46

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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.