Home / 13,281.08-19,916.50-5,381.64

Finding the Fourth Proportional to 13,281.08, 19,916.50 and 5,381.64

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Solution

The fourth proportional to 13,281.08, 19,916.50 and 5,381.64 is: 8,070.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281.08 : 19,916.50 = 5,381.64 : x
  2. Step 2: Convert to fraction form
    13,281.08/19,916.50 = 5,381.64/x
  3. Step 3: Cross multiply
    13,281.08x = 19,916.50 × 5,381.64
  4. Step 4: Simplify right side
    13,281.08x = 107,183,433.06
  5. Step 5: Solve for x
    x = 107,183,433.06/13,281.08
  6. Step 6: Final answer
    x = 8,070.39

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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.