Home / 21,720.20-32,580.30-11,330.60

Finding the Fourth Proportional to 21,720.20, 32,580.30 and 11,330.60

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Solution

The fourth proportional to 21,720.20, 32,580.30 and 11,330.60 is: 16,995.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,720.20 : 32,580.30 = 11,330.60 : x
  2. Step 2: Convert to fraction form
    21,720.20/32,580.30 = 11,330.60/x
  3. Step 3: Cross multiply
    21,720.20x = 32,580.30 × 11,330.60
  4. Step 4: Simplify right side
    21,720.20x = 369,154,347.18
  5. Step 5: Solve for x
    x = 369,154,347.18/21,720.20
  6. Step 6: Final answer
    x = 16,995.90

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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.