Home / 19,918.30-29,896.65-16,999.90

Finding the Fourth Proportional to 19,918.30, 29,896.65 and 16,999.90

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Solution

The fourth proportional to 19,918.30, 29,896.65 and 16,999.90 is: 25,516.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,918.30 : 29,896.65 = 16,999.90 : x
  2. Step 2: Convert to fraction form
    19,918.30/29,896.65 = 16,999.90/x
  3. Step 3: Cross multiply
    19,918.30x = 29,896.65 × 16,999.90
  4. Step 4: Simplify right side
    19,918.30x = 508,240,060.34
  5. Step 5: Solve for x
    x = 508,240,060.34/19,918.30
  6. Step 6: Final answer
    x = 25,516.24

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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.