Home / 19,120.47-28,648.35-11,709.46

Finding the Fourth Proportional to 19,120.47, 28,648.35 and 11,709.46

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Solution

The fourth proportional to 19,120.47, 28,648.35 and 11,709.46 is: 17,544.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,120.47 : 28,648.35 = 11,709.46 : x
  2. Step 2: Convert to fraction form
    19,120.47/28,648.35 = 11,709.46/x
  3. Step 3: Cross multiply
    19,120.47x = 28,648.35 × 11,709.46
  4. Step 4: Simplify right side
    19,120.47x = 335,456,708.39
  5. Step 5: Solve for x
    x = 335,456,708.39/19,120.47
  6. Step 6: Final answer
    x = 17,544.38

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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.