Home / 15,342.99-21,174.03-8,628.54

Finding the Fourth Proportional to 15,342.99, 21,174.03 and 8,628.54

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Solution

The fourth proportional to 15,342.99, 21,174.03 and 8,628.54 is: 11,907.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,342.99 : 21,174.03 = 8,628.54 : x
  2. Step 2: Convert to fraction form
    15,342.99/21,174.03 = 8,628.54/x
  3. Step 3: Cross multiply
    15,342.99x = 21,174.03 × 8,628.54
  4. Step 4: Simplify right side
    15,342.99x = 182,700,964.82
  5. Step 5: Solve for x
    x = 182,700,964.82/15,342.99
  6. Step 6: Final answer
    x = 11,907.78

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1.5x scale

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.