Home / 21,043.20-31,579.20-9,364.80

Finding the Fourth Proportional to 21,043.20, 31,579.20 and 9,364.80

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Solution

The fourth proportional to 21,043.20, 31,579.20 and 9,364.80 is: 14,053.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,043.20 : 31,579.20 = 9,364.80 : x
  2. Step 2: Convert to fraction form
    21,043.20/31,579.20 = 9,364.80/x
  3. Step 3: Cross multiply
    21,043.20x = 31,579.20 × 9,364.80
  4. Step 4: Simplify right side
    21,043.20x = 295,732,892.16
  5. Step 5: Solve for x
    x = 295,732,892.16/21,043.20
  6. Step 6: Final answer
    x = 14,053.61

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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.