Home / 13,998.20-21,021.60-9,867.20

Finding the Fourth Proportional to 13,998.20, 21,021.60 and 9,867.20

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Solution

The fourth proportional to 13,998.20, 21,021.60 and 9,867.20 is: 14,817.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998.20 : 21,021.60 = 9,867.20 : x
  2. Step 2: Convert to fraction form
    13,998.20/21,021.60 = 9,867.20/x
  3. Step 3: Cross multiply
    13,998.20x = 21,021.60 × 9,867.20
  4. Step 4: Simplify right side
    13,998.20x = 207,424,331.52
  5. Step 5: Solve for x
    x = 207,424,331.52/13,998.20
  6. Step 6: Final answer
    x = 14,817.93

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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.