Home / 21,883.47-30,181.14-13,911.81

Finding the Fourth Proportional to 21,883.47, 30,181.14 and 13,911.81

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Solution

The fourth proportional to 21,883.47, 30,181.14 and 13,911.81 is: 19,186.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,883.47 : 30,181.14 = 13,911.81 : x
  2. Step 2: Convert to fraction form
    21,883.47/30,181.14 = 13,911.81/x
  3. Step 3: Cross multiply
    21,883.47x = 30,181.14 × 13,911.81
  4. Step 4: Simplify right side
    21,883.47x = 419,874,285.26
  5. Step 5: Solve for x
    x = 419,874,285.26/21,883.47
  6. Step 6: Final answer
    x = 19,186.82

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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.