Home / 19,007.79-28,511.70-5,156.79

Finding the Fourth Proportional to 19,007.79, 28,511.70 and 5,156.79

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Solution

The fourth proportional to 19,007.79, 28,511.70 and 5,156.79 is: 7,735.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,007.79 : 28,511.70 = 5,156.79 : x
  2. Step 2: Convert to fraction form
    19,007.79/28,511.70 = 5,156.79/x
  3. Step 3: Cross multiply
    19,007.79x = 28,511.70 × 5,156.79
  4. Step 4: Simplify right side
    19,007.79x = 147,028,849.44
  5. Step 5: Solve for x
    x = 147,028,849.44/19,007.79
  6. Step 6: Final answer
    x = 7,735.19

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1.5x scale

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.