Home / 12,789.16-19,198.14-9,902.28

Finding the Fourth Proportional to 12,789.16, 19,198.14 and 9,902.28

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Solution

The fourth proportional to 12,789.16, 19,198.14 and 9,902.28 is: 14,864.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,789.16 : 19,198.14 = 9,902.28 : x
  2. Step 2: Convert to fraction form
    12,789.16/19,198.14 = 9,902.28/x
  3. Step 3: Cross multiply
    12,789.16x = 19,198.14 × 9,902.28
  4. Step 4: Simplify right side
    12,789.16x = 190,105,357.76
  5. Step 5: Solve for x
    x = 190,105,357.76/12,789.16
  6. Step 6: Final answer
    x = 14,864.57

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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.