Home / 21,342.20-32,003.70-8,190.20

Finding the Fourth Proportional to 21,342.20, 32,003.70 and 8,190.20

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Solution

The fourth proportional to 21,342.20, 32,003.70 and 8,190.20 is: 12,281.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,342.20 : 32,003.70 = 8,190.20 : x
  2. Step 2: Convert to fraction form
    21,342.20/32,003.70 = 8,190.20/x
  3. Step 3: Cross multiply
    21,342.20x = 32,003.70 × 8,190.20
  4. Step 4: Simplify right side
    21,342.20x = 262,116,703.74
  5. Step 5: Solve for x
    x = 262,116,703.74/21,342.20
  6. Step 6: Final answer
    x = 12,281.62

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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.