Home / 20,654.36-30,981.54-5,071.98

Finding the Fourth Proportional to 20,654.36, 30,981.54 and 5,071.98

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Solution

The fourth proportional to 20,654.36, 30,981.54 and 5,071.98 is: 7,607.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,654.36 : 30,981.54 = 5,071.98 : x
  2. Step 2: Convert to fraction form
    20,654.36/30,981.54 = 5,071.98/x
  3. Step 3: Cross multiply
    20,654.36x = 30,981.54 × 5,071.98
  4. Step 4: Simplify right side
    20,654.36x = 157,137,751.25
  5. Step 5: Solve for x
    x = 157,137,751.25/20,654.36
  6. Step 6: Final answer
    x = 7,607.97

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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.