Home / 21,929.69-32,886.36-7,885.89

Finding the Fourth Proportional to 21,929.69, 32,886.36 and 7,885.89

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Solution

The fourth proportional to 21,929.69, 32,886.36 and 7,885.89 is: 11,825.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,929.69 : 32,886.36 = 7,885.89 : x
  2. Step 2: Convert to fraction form
    21,929.69/32,886.36 = 7,885.89/x
  3. Step 3: Cross multiply
    21,929.69x = 32,886.36 × 7,885.89
  4. Step 4: Simplify right side
    21,929.69x = 259,338,217.46
  5. Step 5: Solve for x
    x = 259,338,217.46/21,929.69
  6. Step 6: Final answer
    x = 11,825.90

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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.