Home / 19,128.81-28,694.87-5,277.81

Finding the Fourth Proportional to 19,128.81, 28,694.87 and 5,277.81

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Solution

The fourth proportional to 19,128.81, 28,694.87 and 5,277.81 is: 7,917.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,128.81 : 28,694.87 = 5,277.81 : x
  2. Step 2: Convert to fraction form
    19,128.81/28,694.87 = 5,277.81/x
  3. Step 3: Cross multiply
    19,128.81x = 28,694.87 × 5,277.81
  4. Step 4: Simplify right side
    19,128.81x = 151,446,071.83
  5. Step 5: Solve for x
    x = 151,446,071.83/19,128.81
  6. Step 6: Final answer
    x = 7,917.17

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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.