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Finding the Fourth Proportional to 21,799.67, 32,714.01 and 7,948.67

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Solution

The fourth proportional to 21,799.67, 32,714.01 and 7,948.67 is: 11,928.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,799.67 : 32,714.01 = 7,948.67 : x
  2. Step 2: Convert to fraction form
    21,799.67/32,714.01 = 7,948.67/x
  3. Step 3: Cross multiply
    21,799.67x = 32,714.01 × 7,948.67
  4. Step 4: Simplify right side
    21,799.67x = 260,032,706.30
  5. Step 5: Solve for x
    x = 260,032,706.30/21,799.67
  6. Step 6: Final answer
    x = 11,928.29

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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.