Home / 19,106.69-28,661.87-7,420.82

Finding the Fourth Proportional to 19,106.69, 28,661.87 and 7,420.82

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Solution

The fourth proportional to 19,106.69, 28,661.87 and 7,420.82 is: 11,131.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,106.69 : 28,661.87 = 7,420.82 : x
  2. Step 2: Convert to fraction form
    19,106.69/28,661.87 = 7,420.82/x
  3. Step 3: Cross multiply
    19,106.69x = 28,661.87 × 7,420.82
  4. Step 4: Simplify right side
    19,106.69x = 212,694,612.68
  5. Step 5: Solve for x
    x = 212,694,612.68/19,106.69
  6. Step 6: Final answer
    x = 11,131.94

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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.