Home / 21,161.04-31,741.53-8,672.52

Finding the Fourth Proportional to 21,161.04, 31,741.53 and 8,672.52

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Solution

The fourth proportional to 21,161.04, 31,741.53 and 8,672.52 is: 13,008.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,161.04 : 31,741.53 = 8,672.52 : x
  2. Step 2: Convert to fraction form
    21,161.04/31,741.53 = 8,672.52/x
  3. Step 3: Cross multiply
    21,161.04x = 31,741.53 × 8,672.52
  4. Step 4: Simplify right side
    21,161.04x = 275,279,053.76
  5. Step 5: Solve for x
    x = 275,279,053.76/21,161.04
  6. Step 6: Final answer
    x = 13,008.77

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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.