Home / 10,769.51-16,139.58-5,211.77

Finding the Fourth Proportional to 10,769.51, 16,139.58 and 5,211.77

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Solution

The fourth proportional to 10,769.51, 16,139.58 and 5,211.77 is: 7,810.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,769.51 : 16,139.58 = 5,211.77 : x
  2. Step 2: Convert to fraction form
    10,769.51/16,139.58 = 5,211.77/x
  3. Step 3: Cross multiply
    10,769.51x = 16,139.58 × 5,211.77
  4. Step 4: Simplify right side
    10,769.51x = 84,115,698.16
  5. Step 5: Solve for x
    x = 84,115,698.16/10,769.51
  6. Step 6: Final answer
    x = 7,810.54

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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.