Home / 20,623-28,467.12-12,239.50

Finding the Fourth Proportional to 20,623, 28,467.12 and 12,239.50

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Solution

The fourth proportional to 20,623, 28,467.12 and 12,239.50 is: 16,894.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,623 : 28,467.12 = 12,239.50 : x
  2. Step 2: Convert to fraction form
    20,623/28,467.12 = 12,239.50/x
  3. Step 3: Cross multiply
    20,623x = 28,467.12 × 12,239.50
  4. Step 4: Simplify right side
    20,623x = 348,423,315.24
  5. Step 5: Solve for x
    x = 348,423,315.24/20,623
  6. Step 6: Final answer
    x = 16,894.89

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.