Home / 10,615.51-15,923.31-3,220.05

Finding the Fourth Proportional to 10,615.51, 15,923.31 and 3,220.05

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Solution

The fourth proportional to 10,615.51, 15,923.31 and 3,220.05 is: 4,830.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,615.51 : 15,923.31 = 3,220.05 : x
  2. Step 2: Convert to fraction form
    10,615.51/15,923.31 = 3,220.05/x
  3. Step 3: Cross multiply
    10,615.51x = 15,923.31 × 3,220.05
  4. Step 4: Simplify right side
    10,615.51x = 51,273,854.37
  5. Step 5: Solve for x
    x = 51,273,854.37/10,615.51
  6. Step 6: Final answer
    x = 4,830.09

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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.