Home / 21,037.20-31,555.80-6,244.80

Finding the Fourth Proportional to 21,037.20, 31,555.80 and 6,244.80

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Solution

The fourth proportional to 21,037.20, 31,555.80 and 6,244.80 is: 9,367.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,037.20 : 31,555.80 = 6,244.80 : x
  2. Step 2: Convert to fraction form
    21,037.20/31,555.80 = 6,244.80/x
  3. Step 3: Cross multiply
    21,037.20x = 31,555.80 × 6,244.80
  4. Step 4: Simplify right side
    21,037.20x = 197,059,659.84
  5. Step 5: Solve for x
    x = 197,059,659.84/21,037.20
  6. Step 6: Final answer
    x = 9,367.20

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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.