Home / 19,108.13-28,662.93-9,107.72

Finding the Fourth Proportional to 19,108.13, 28,662.93 and 9,107.72

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Solution

The fourth proportional to 19,108.13, 28,662.93 and 9,107.72 is: 13,661.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,108.13 : 28,662.93 = 9,107.72 : x
  2. Step 2: Convert to fraction form
    19,108.13/28,662.93 = 9,107.72/x
  3. Step 3: Cross multiply
    19,108.13x = 28,662.93 × 9,107.72
  4. Step 4: Simplify right side
    19,108.13x = 261,053,940.82
  5. Step 5: Solve for x
    x = 261,053,940.82/19,108.13
  6. Step 6: Final answer
    x = 13,661.93

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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.