Home / 20,345.61-30,534.03-9,104.43

Finding the Fourth Proportional to 20,345.61, 30,534.03 and 9,104.43

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Solution

The fourth proportional to 20,345.61, 30,534.03 and 9,104.43 is: 13,663.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,345.61 : 30,534.03 = 9,104.43 : x
  2. Step 2: Convert to fraction form
    20,345.61/30,534.03 = 9,104.43/x
  3. Step 3: Cross multiply
    20,345.61x = 30,534.03 × 9,104.43
  4. Step 4: Simplify right side
    20,345.61x = 277,994,938.75
  5. Step 5: Solve for x
    x = 277,994,938.75/20,345.61
  6. Step 6: Final answer
    x = 13,663.63

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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.