Home / 30,026.21-45,039.22-21,104.81

Finding the Fourth Proportional to 30,026.21, 45,039.22 and 21,104.81

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Solution

The fourth proportional to 30,026.21, 45,039.22 and 21,104.81 is: 31,657.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,026.21 : 45,039.22 = 21,104.81 : x
  2. Step 2: Convert to fraction form
    30,026.21/45,039.22 = 21,104.81/x
  3. Step 3: Cross multiply
    30,026.21x = 45,039.22 × 21,104.81
  4. Step 4: Simplify right side
    30,026.21x = 950,544,180.65
  5. Step 5: Solve for x
    x = 950,544,180.65/30,026.21
  6. Step 6: Final answer
    x = 31,657.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.