Home / 20,982.95-31,464.45-7,646.50

Finding the Fourth Proportional to 20,982.95, 31,464.45 and 7,646.50

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Solution

The fourth proportional to 20,982.95, 31,464.45 and 7,646.50 is: 11,466.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982.95 : 31,464.45 = 7,646.50 : x
  2. Step 2: Convert to fraction form
    20,982.95/31,464.45 = 7,646.50/x
  3. Step 3: Cross multiply
    20,982.95x = 31,464.45 × 7,646.50
  4. Step 4: Simplify right side
    20,982.95x = 240,592,956.26
  5. Step 5: Solve for x
    x = 240,592,956.26/20,982.95
  6. Step 6: Final answer
    x = 11,466.12

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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.