Home / 17,123.79-25,688.10-5,278.52

Finding the Fourth Proportional to 17,123.79, 25,688.10 and 5,278.52

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Solution

The fourth proportional to 17,123.79, 25,688.10 and 5,278.52 is: 7,918.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,123.79 : 25,688.10 = 5,278.52 : x
  2. Step 2: Convert to fraction form
    17,123.79/25,688.10 = 5,278.52/x
  3. Step 3: Cross multiply
    17,123.79x = 25,688.10 × 5,278.52
  4. Step 4: Simplify right side
    17,123.79x = 135,595,148.14
  5. Step 5: Solve for x
    x = 135,595,148.14/17,123.79
  6. Step 6: Final answer
    x = 7,918.52

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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.