Home / 15,631.72-21,573.24-9,343.96

Finding the Fourth Proportional to 15,631.72, 21,573.24 and 9,343.96

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Solution

The fourth proportional to 15,631.72, 21,573.24 and 9,343.96 is: 12,895.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,631.72 : 21,573.24 = 9,343.96 : x
  2. Step 2: Convert to fraction form
    15,631.72/21,573.24 = 9,343.96/x
  3. Step 3: Cross multiply
    15,631.72x = 21,573.24 × 9,343.96
  4. Step 4: Simplify right side
    15,631.72x = 201,579,491.63
  5. Step 5: Solve for x
    x = 201,579,491.63/15,631.72
  6. Step 6: Final answer
    x = 12,895.54

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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.