Home / 21,769.40-32,567.70-18,879.80

Finding the Fourth Proportional to 21,769.40, 32,567.70 and 18,879.80

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Solution

The fourth proportional to 21,769.40, 32,567.70 and 18,879.80 is: 28,244.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,769.40 : 32,567.70 = 18,879.80 : x
  2. Step 2: Convert to fraction form
    21,769.40/32,567.70 = 18,879.80/x
  3. Step 3: Cross multiply
    21,769.40x = 32,567.70 × 18,879.80
  4. Step 4: Simplify right side
    21,769.40x = 614,871,662.46
  5. Step 5: Solve for x
    x = 614,871,662.46/21,769.40
  6. Step 6: Final answer
    x = 28,244.77

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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.