Home / 21,780.26-32,674.64-6,988.04

Finding the Fourth Proportional to 21,780.26, 32,674.64 and 6,988.04

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Solution

The fourth proportional to 21,780.26, 32,674.64 and 6,988.04 is: 10,483.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,780.26 : 32,674.64 = 6,988.04 : x
  2. Step 2: Convert to fraction form
    21,780.26/32,674.64 = 6,988.04/x
  3. Step 3: Cross multiply
    21,780.26x = 32,674.64 × 6,988.04
  4. Step 4: Simplify right side
    21,780.26x = 228,331,654.83
  5. Step 5: Solve for x
    x = 228,331,654.83/21,780.26
  6. Step 6: Final answer
    x = 10,483.42

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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.