Home / 19,985.05-29,968.86-10,622.82

Finding the Fourth Proportional to 19,985.05, 29,968.86 and 10,622.82

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Solution

The fourth proportional to 19,985.05, 29,968.86 and 10,622.82 is: 15,929.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,985.05 : 29,968.86 = 10,622.82 : x
  2. Step 2: Convert to fraction form
    19,985.05/29,968.86 = 10,622.82/x
  3. Step 3: Cross multiply
    19,985.05x = 29,968.86 × 10,622.82
  4. Step 4: Simplify right side
    19,985.05x = 318,353,843.44
  5. Step 5: Solve for x
    x = 318,353,843.44/19,985.05
  6. Step 6: Final answer
    x = 15,929.60

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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.