Home / 21,786.96-30,048.50-13,831.14

Finding the Fourth Proportional to 21,786.96, 30,048.50 and 13,831.14

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Solution

The fourth proportional to 21,786.96, 30,048.50 and 13,831.14 is: 19,075.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,786.96 : 30,048.50 = 13,831.14 : x
  2. Step 2: Convert to fraction form
    21,786.96/30,048.50 = 13,831.14/x
  3. Step 3: Cross multiply
    21,786.96x = 30,048.50 × 13,831.14
  4. Step 4: Simplify right side
    21,786.96x = 415,605,010.29
  5. Step 5: Solve for x
    x = 415,605,010.29/21,786.96
  6. Step 6: Final answer
    x = 19,075.86

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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.