Home / 21,789.85-32,680.47-5,990.80

Finding the Fourth Proportional to 21,789.85, 32,680.47 and 5,990.80

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Solution

The fourth proportional to 21,789.85, 32,680.47 and 5,990.80 is: 8,985.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,789.85 : 32,680.47 = 5,990.80 : x
  2. Step 2: Convert to fraction form
    21,789.85/32,680.47 = 5,990.80/x
  3. Step 3: Cross multiply
    21,789.85x = 32,680.47 × 5,990.80
  4. Step 4: Simplify right side
    21,789.85x = 195,782,159.68
  5. Step 5: Solve for x
    x = 195,782,159.68/21,789.85
  6. Step 6: Final answer
    x = 8,985.02

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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.