Home / 22,020.40-32,998.20-18,715.60

Finding the Fourth Proportional to 22,020.40, 32,998.20 and 18,715.60

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Solution

The fourth proportional to 22,020.40, 32,998.20 and 18,715.60 is: 28,045.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,020.40 : 32,998.20 = 18,715.60 : x
  2. Step 2: Convert to fraction form
    22,020.40/32,998.20 = 18,715.60/x
  3. Step 3: Cross multiply
    22,020.40x = 32,998.20 × 18,715.60
  4. Step 4: Simplify right side
    22,020.40x = 617,581,111.92
  5. Step 5: Solve for x
    x = 617,581,111.92/22,020.40
  6. Step 6: Final answer
    x = 28,045.86

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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.