Home / 19,917.63-29,876.38-5,125.30

Finding the Fourth Proportional to 19,917.63, 29,876.38 and 5,125.30

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Solution

The fourth proportional to 19,917.63, 29,876.38 and 5,125.30 is: 7,687.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,917.63 : 29,876.38 = 5,125.30 : x
  2. Step 2: Convert to fraction form
    19,917.63/29,876.38 = 5,125.30/x
  3. Step 3: Cross multiply
    19,917.63x = 29,876.38 × 5,125.30
  4. Step 4: Simplify right side
    19,917.63x = 153,125,322.91
  5. Step 5: Solve for x
    x = 153,125,322.91/19,917.63
  6. Step 6: Final answer
    x = 7,687.93

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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.