Home / 12,021.04-16,664.89-11,388.70

Finding the Fourth Proportional to 12,021.04, 16,664.89 and 11,388.70

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Solution

The fourth proportional to 12,021.04, 16,664.89 and 11,388.70 is: 15,788.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,021.04 : 16,664.89 = 11,388.70 : x
  2. Step 2: Convert to fraction form
    12,021.04/16,664.89 = 11,388.70/x
  3. Step 3: Cross multiply
    12,021.04x = 16,664.89 × 11,388.70
  4. Step 4: Simplify right side
    12,021.04x = 189,791,432.74
  5. Step 5: Solve for x
    x = 189,791,432.74/12,021.04
  6. Step 6: Final answer
    x = 15,788.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.