Home / 19,151.88-28,725.50-5,112.96

Finding the Fourth Proportional to 19,151.88, 28,725.50 and 5,112.96

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Solution

The fourth proportional to 19,151.88, 28,725.50 and 5,112.96 is: 7,668.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,151.88 : 28,725.50 = 5,112.96 : x
  2. Step 2: Convert to fraction form
    19,151.88/28,725.50 = 5,112.96/x
  3. Step 3: Cross multiply
    19,151.88x = 28,725.50 × 5,112.96
  4. Step 4: Simplify right side
    19,151.88x = 146,872,332.48
  5. Step 5: Solve for x
    x = 146,872,332.48/19,151.88
  6. Step 6: Final answer
    x = 7,668.82

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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.