Home / 13,277.78-19,916.68-5,478.02

Finding the Fourth Proportional to 13,277.78, 19,916.68 and 5,478.02

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Solution

The fourth proportional to 13,277.78, 19,916.68 and 5,478.02 is: 8,217.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,277.78 : 19,916.68 = 5,478.02 : x
  2. Step 2: Convert to fraction form
    13,277.78/19,916.68 = 5,478.02/x
  3. Step 3: Cross multiply
    13,277.78x = 19,916.68 × 5,478.02
  4. Step 4: Simplify right side
    13,277.78x = 109,103,971.37
  5. Step 5: Solve for x
    x = 109,103,971.37/13,277.78
  6. Step 6: Final answer
    x = 8,217.03

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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.