Home / 21,786.08-32,670.81-9,311.87

Finding the Fourth Proportional to 21,786.08, 32,670.81 and 9,311.87

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Solution

The fourth proportional to 21,786.08, 32,670.81 and 9,311.87 is: 13,964.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,786.08 : 32,670.81 = 9,311.87 : x
  2. Step 2: Convert to fraction form
    21,786.08/32,670.81 = 9,311.87/x
  3. Step 3: Cross multiply
    21,786.08x = 32,670.81 × 9,311.87
  4. Step 4: Simplify right side
    21,786.08x = 304,226,417.19
  5. Step 5: Solve for x
    x = 304,226,417.19/21,786.08
  6. Step 6: Final answer
    x = 13,964.26

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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.