Home / 19,888.74-27,436.59-11,929.14

Finding the Fourth Proportional to 19,888.74, 27,436.59 and 11,929.14

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Solution

The fourth proportional to 19,888.74, 27,436.59 and 11,929.14 is: 16,456.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,888.74 : 27,436.59 = 11,929.14 : x
  2. Step 2: Convert to fraction form
    19,888.74/27,436.59 = 11,929.14/x
  3. Step 3: Cross multiply
    19,888.74x = 27,436.59 × 11,929.14
  4. Step 4: Simplify right side
    19,888.74x = 327,294,923.23
  5. Step 5: Solve for x
    x = 327,294,923.23/19,888.74
  6. Step 6: Final answer
    x = 16,456.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.