Home / 15,675.13-21,631.62-8,601.54

Finding the Fourth Proportional to 15,675.13, 21,631.62 and 8,601.54

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Solution

The fourth proportional to 15,675.13, 21,631.62 and 8,601.54 is: 11,870.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,675.13 : 21,631.62 = 8,601.54 : x
  2. Step 2: Convert to fraction form
    15,675.13/21,631.62 = 8,601.54/x
  3. Step 3: Cross multiply
    15,675.13x = 21,631.62 × 8,601.54
  4. Step 4: Simplify right side
    15,675.13x = 186,065,244.69
  5. Step 5: Solve for x
    x = 186,065,244.69/15,675.13
  6. Step 6: Final answer
    x = 11,870.09

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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.