Home / 21,764.81-30,050.10-13,600.81

Finding the Fourth Proportional to 21,764.81, 30,050.10 and 13,600.81

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Solution

The fourth proportional to 21,764.81, 30,050.10 and 13,600.81 is: 18,778.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,764.81 : 30,050.10 = 13,600.81 : x
  2. Step 2: Convert to fraction form
    21,764.81/30,050.10 = 13,600.81/x
  3. Step 3: Cross multiply
    21,764.81x = 30,050.10 × 13,600.81
  4. Step 4: Simplify right side
    21,764.81x = 408,705,632.58
  5. Step 5: Solve for x
    x = 408,705,632.58/21,764.81
  6. Step 6: Final answer
    x = 18,778.28

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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.