Home / 21,162.13-31,741.93-9,472.21

Finding the Fourth Proportional to 21,162.13, 31,741.93 and 9,472.21

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Solution

The fourth proportional to 21,162.13, 31,741.93 and 9,472.21 is: 14,207.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,162.13 : 31,741.93 = 9,472.21 : x
  2. Step 2: Convert to fraction form
    21,162.13/31,741.93 = 9,472.21/x
  3. Step 3: Cross multiply
    21,162.13x = 31,741.93 × 9,472.21
  4. Step 4: Simplify right side
    21,162.13x = 300,666,226.77
  5. Step 5: Solve for x
    x = 300,666,226.77/21,162.13
  6. Step 6: Final answer
    x = 14,207.75

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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.