Home / 20,289.86-27,994.89-11,904.74

Finding the Fourth Proportional to 20,289.86, 27,994.89 and 11,904.74

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Solution

The fourth proportional to 20,289.86, 27,994.89 and 11,904.74 is: 16,425.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,289.86 : 27,994.89 = 11,904.74 : x
  2. Step 2: Convert to fraction form
    20,289.86/27,994.89 = 11,904.74/x
  3. Step 3: Cross multiply
    20,289.86x = 27,994.89 × 11,904.74
  4. Step 4: Simplify right side
    20,289.86x = 333,271,886.78
  5. Step 5: Solve for x
    x = 333,271,886.78/20,289.86
  6. Step 6: Final answer
    x = 16,425.54

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1.5x scale

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.