Home / 12,612.78-19,010.34-11,898.36

Finding the Fourth Proportional to 12,612.78, 19,010.34 and 11,898.36

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Solution

The fourth proportional to 12,612.78, 19,010.34 and 11,898.36 is: 17,933.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,612.78 : 19,010.34 = 11,898.36 : x
  2. Step 2: Convert to fraction form
    12,612.78/19,010.34 = 11,898.36/x
  3. Step 3: Cross multiply
    12,612.78x = 19,010.34 × 11,898.36
  4. Step 4: Simplify right side
    12,612.78x = 226,191,869.04
  5. Step 5: Solve for x
    x = 226,191,869.04/12,612.78
  6. Step 6: Final answer
    x = 17,933.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.