Home / 20,039.70-30,026.61-12,625.77

Finding the Fourth Proportional to 20,039.70, 30,026.61 and 12,625.77

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Solution

The fourth proportional to 20,039.70, 30,026.61 and 12,625.77 is: 18,917.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,039.70 : 30,026.61 = 12,625.77 : x
  2. Step 2: Convert to fraction form
    20,039.70/30,026.61 = 12,625.77/x
  3. Step 3: Cross multiply
    20,039.70x = 30,026.61 × 12,625.77
  4. Step 4: Simplify right side
    20,039.70x = 379,109,071.74
  5. Step 5: Solve for x
    x = 379,109,071.74/20,039.70
  6. Step 6: Final answer
    x = 18,917.90

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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.