Home / 15,529.42-21,429.87-8,455.82

Finding the Fourth Proportional to 15,529.42, 21,429.87 and 8,455.82

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Solution

The fourth proportional to 15,529.42, 21,429.87 and 8,455.82 is: 11,668.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,529.42 : 21,429.87 = 8,455.82 : x
  2. Step 2: Convert to fraction form
    15,529.42/21,429.87 = 8,455.82/x
  3. Step 3: Cross multiply
    15,529.42x = 21,429.87 × 8,455.82
  4. Step 4: Simplify right side
    15,529.42x = 181,207,123.34
  5. Step 5: Solve for x
    x = 181,207,123.34/15,529.42
  6. Step 6: Final answer
    x = 11,668.63

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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.