Home / 18,645.05-27,967.58-12,783.89

Finding the Fourth Proportional to 18,645.05, 27,967.58 and 12,783.89

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Solution

The fourth proportional to 18,645.05, 27,967.58 and 12,783.89 is: 19,175.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,645.05 : 27,967.58 = 12,783.89 : x
  2. Step 2: Convert to fraction form
    18,645.05/27,967.58 = 12,783.89/x
  3. Step 3: Cross multiply
    18,645.05x = 27,967.58 × 12,783.89
  4. Step 4: Simplify right side
    18,645.05x = 357,534,520.23
  5. Step 5: Solve for x
    x = 357,534,520.23/18,645.05
  6. Step 6: Final answer
    x = 19,175.84

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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.