Home / 13,985.13-20,972.69-4,623.42

Finding the Fourth Proportional to 13,985.13, 20,972.69 and 4,623.42

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Solution

The fourth proportional to 13,985.13, 20,972.69 and 4,623.42 is: 6,933.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,985.13 : 20,972.69 = 4,623.42 : x
  2. Step 2: Convert to fraction form
    13,985.13/20,972.69 = 4,623.42/x
  3. Step 3: Cross multiply
    13,985.13x = 20,972.69 × 4,623.42
  4. Step 4: Simplify right side
    13,985.13x = 96,965,565.96
  5. Step 5: Solve for x
    x = 96,965,565.96/13,985.13
  6. Step 6: Final answer
    x = 6,933.48

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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.