Home / 43,290.79-64,942.86-18,331

Finding the Fourth Proportional to 43,290.79, 64,942.86 and 18,331

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Solution

The fourth proportional to 43,290.79, 64,942.86 and 18,331 is: 27,499.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,290.79 : 64,942.86 = 18,331 : x
  2. Step 2: Convert to fraction form
    43,290.79/64,942.86 = 18,331/x
  3. Step 3: Cross multiply
    43,290.79x = 64,942.86 × 18,331
  4. Step 4: Simplify right side
    43,290.79x = 1,190,467,566.66
  5. Step 5: Solve for x
    x = 1,190,467,566.66/43,290.79
  6. Step 6: Final answer
    x = 27,499.33

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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.