Home / 10,515.18-15,772.70-3,495.72

Finding the Fourth Proportional to 10,515.18, 15,772.70 and 3,495.72

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Solution

The fourth proportional to 10,515.18, 15,772.70 and 3,495.72 is: 5,243.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,515.18 : 15,772.70 = 3,495.72 : x
  2. Step 2: Convert to fraction form
    10,515.18/15,772.70 = 3,495.72/x
  3. Step 3: Cross multiply
    10,515.18x = 15,772.70 × 3,495.72
  4. Step 4: Simplify right side
    10,515.18x = 55,136,925.37
  5. Step 5: Solve for x
    x = 55,136,925.37/10,515.18
  6. Step 6: Final answer
    x = 5,243.56

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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.