Home / 19,916.38-29,860.80-8,817.04

Finding the Fourth Proportional to 19,916.38, 29,860.80 and 8,817.04

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Solution

The fourth proportional to 19,916.38, 29,860.80 and 8,817.04 is: 13,219.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,916.38 : 29,860.80 = 8,817.04 : x
  2. Step 2: Convert to fraction form
    19,916.38/29,860.80 = 8,817.04/x
  3. Step 3: Cross multiply
    19,916.38x = 29,860.80 × 8,817.04
  4. Step 4: Simplify right side
    19,916.38x = 263,283,868.03
  5. Step 5: Solve for x
    x = 263,283,868.03/19,916.38
  6. Step 6: Final answer
    x = 13,219.46

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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.