Home / 22,220.80-33,286.40-13,875.20

Finding the Fourth Proportional to 22,220.80, 33,286.40 and 13,875.20

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Solution

The fourth proportional to 22,220.80, 33,286.40 and 13,875.20 is: 20,784.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,220.80 : 33,286.40 = 13,875.20 : x
  2. Step 2: Convert to fraction form
    22,220.80/33,286.40 = 13,875.20/x
  3. Step 3: Cross multiply
    22,220.80x = 33,286.40 × 13,875.20
  4. Step 4: Simplify right side
    22,220.80x = 461,855,457.28
  5. Step 5: Solve for x
    x = 461,855,457.28/22,220.80
  6. Step 6: Final answer
    x = 20,784.83

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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.