Home / 13,116.58-19,678.38-5,721.64

Finding the Fourth Proportional to 13,116.58, 19,678.38 and 5,721.64

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Solution

The fourth proportional to 13,116.58, 19,678.38 and 5,721.64 is: 8,583.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,116.58 : 19,678.38 = 5,721.64 : x
  2. Step 2: Convert to fraction form
    13,116.58/19,678.38 = 5,721.64/x
  3. Step 3: Cross multiply
    13,116.58x = 19,678.38 × 5,721.64
  4. Step 4: Simplify right side
    13,116.58x = 112,592,606.14
  5. Step 5: Solve for x
    x = 112,592,606.14/13,116.58
  6. Step 6: Final answer
    x = 8,583.99

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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.