Home / 28,635.80-42,970.43-11,994.41

Finding the Fourth Proportional to 28,635.80, 42,970.43 and 11,994.41

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Solution

The fourth proportional to 28,635.80, 42,970.43 and 11,994.41 is: 17,998.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,635.80 : 42,970.43 = 11,994.41 : x
  2. Step 2: Convert to fraction form
    28,635.80/42,970.43 = 11,994.41/x
  3. Step 3: Cross multiply
    28,635.80x = 42,970.43 × 11,994.41
  4. Step 4: Simplify right side
    28,635.80x = 515,405,092.71
  5. Step 5: Solve for x
    x = 515,405,092.71/28,635.80
  6. Step 6: Final answer
    x = 17,998.63

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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.