Home / 10,864.21-14,992.82-7,089.79

Finding the Fourth Proportional to 10,864.21, 14,992.82 and 7,089.79

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Solution

The fourth proportional to 10,864.21, 14,992.82 and 7,089.79 is: 9,784.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,864.21 : 14,992.82 = 7,089.79 : x
  2. Step 2: Convert to fraction form
    10,864.21/14,992.82 = 7,089.79/x
  3. Step 3: Cross multiply
    10,864.21x = 14,992.82 × 7,089.79
  4. Step 4: Simplify right side
    10,864.21x = 106,295,898.96
  5. Step 5: Solve for x
    x = 106,295,898.96/10,864.21
  6. Step 6: Final answer
    x = 9,784.05

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Why These Related Problems?

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