Home / 10,364.31-15,559.47-8,309.91

Finding the Fourth Proportional to 10,364.31, 15,559.47 and 8,309.91

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Solution

The fourth proportional to 10,364.31, 15,559.47 and 8,309.91 is: 12,475.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,364.31 : 15,559.47 = 8,309.91 : x
  2. Step 2: Convert to fraction form
    10,364.31/15,559.47 = 8,309.91/x
  3. Step 3: Cross multiply
    10,364.31x = 15,559.47 × 8,309.91
  4. Step 4: Simplify right side
    10,364.31x = 129,297,795.35
  5. Step 5: Solve for x
    x = 129,297,795.35/10,364.31
  6. Step 6: Final answer
    x = 12,475.29

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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.