Home / 19,110.56-28,669.20-8,723.36

Finding the Fourth Proportional to 19,110.56, 28,669.20 and 8,723.36

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Solution

The fourth proportional to 19,110.56, 28,669.20 and 8,723.36 is: 13,086.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,110.56 : 28,669.20 = 8,723.36 : x
  2. Step 2: Convert to fraction form
    19,110.56/28,669.20 = 8,723.36/x
  3. Step 3: Cross multiply
    19,110.56x = 28,669.20 × 8,723.36
  4. Step 4: Simplify right side
    19,110.56x = 250,091,752.51
  5. Step 5: Solve for x
    x = 250,091,752.51/19,110.56
  6. Step 6: Final answer
    x = 13,086.57

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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.