Home / 13,561.48-20,244-11,724.40

Finding the Fourth Proportional to 13,561.48, 20,244 and 11,724.40

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Solution

The fourth proportional to 13,561.48, 20,244 and 11,724.40 is: 17,501.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,561.48 : 20,244 = 11,724.40 : x
  2. Step 2: Convert to fraction form
    13,561.48/20,244 = 11,724.40/x
  3. Step 3: Cross multiply
    13,561.48x = 20,244 × 11,724.40
  4. Step 4: Simplify right side
    13,561.48x = 237,348,753.60
  5. Step 5: Solve for x
    x = 237,348,753.60/13,561.48
  6. Step 6: Final answer
    x = 17,501.69

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.