Home / 21,990.60-33,018.30-17,065.80

Finding the Fourth Proportional to 21,990.60, 33,018.30 and 17,065.80

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Solution

The fourth proportional to 21,990.60, 33,018.30 and 17,065.80 is: 25,623.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,990.60 : 33,018.30 = 17,065.80 : x
  2. Step 2: Convert to fraction form
    21,990.60/33,018.30 = 17,065.80/x
  3. Step 3: Cross multiply
    21,990.60x = 33,018.30 × 17,065.80
  4. Step 4: Simplify right side
    21,990.60x = 563,483,704.14
  5. Step 5: Solve for x
    x = 563,483,704.14/21,990.60
  6. Step 6: Final answer
    x = 25,623.84

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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.