Home / 20,994.74-28,976.51-12,045.20

Finding the Fourth Proportional to 20,994.74, 28,976.51 and 12,045.20

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Solution

The fourth proportional to 20,994.74, 28,976.51 and 12,045.20 is: 16,624.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,994.74 : 28,976.51 = 12,045.20 : x
  2. Step 2: Convert to fraction form
    20,994.74/28,976.51 = 12,045.20/x
  3. Step 3: Cross multiply
    20,994.74x = 28,976.51 × 12,045.20
  4. Step 4: Simplify right side
    20,994.74x = 349,027,653.14
  5. Step 5: Solve for x
    x = 349,027,653.14/20,994.74
  6. Step 6: Final answer
    x = 16,624.53

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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.