Home / 19,985.58-29,983.23-8,292.42

Finding the Fourth Proportional to 19,985.58, 29,983.23 and 8,292.42

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Solution

The fourth proportional to 19,985.58, 29,983.23 and 8,292.42 is: 12,440.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,985.58 : 29,983.23 = 8,292.42 : x
  2. Step 2: Convert to fraction form
    19,985.58/29,983.23 = 8,292.42/x
  3. Step 3: Cross multiply
    19,985.58x = 29,983.23 × 8,292.42
  4. Step 4: Simplify right side
    19,985.58x = 248,633,536.12
  5. Step 5: Solve for x
    x = 248,633,536.12/19,985.58
  6. Step 6: Final answer
    x = 12,440.65

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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.