Home / 19,916.20-29,875.84-5,125.26

Finding the Fourth Proportional to 19,916.20, 29,875.84 and 5,125.26

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Solution

The fourth proportional to 19,916.20, 29,875.84 and 5,125.26 is: 7,688.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,916.20 : 29,875.84 = 5,125.26 : x
  2. Step 2: Convert to fraction form
    19,916.20/29,875.84 = 5,125.26/x
  3. Step 3: Cross multiply
    19,916.20x = 29,875.84 × 5,125.26
  4. Step 4: Simplify right side
    19,916.20x = 153,121,546.94
  5. Step 5: Solve for x
    x = 153,121,546.94/19,916.20
  6. Step 6: Final answer
    x = 7,688.29

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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.