Home / 10,639.65-15,962.01-5,361.69

Finding the Fourth Proportional to 10,639.65, 15,962.01 and 5,361.69

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Solution

The fourth proportional to 10,639.65, 15,962.01 and 5,361.69 is: 8,043.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,639.65 : 15,962.01 = 5,361.69 : x
  2. Step 2: Convert to fraction form
    10,639.65/15,962.01 = 5,361.69/x
  3. Step 3: Cross multiply
    10,639.65x = 15,962.01 × 5,361.69
  4. Step 4: Simplify right side
    10,639.65x = 85,583,349.40
  5. Step 5: Solve for x
    x = 85,583,349.40/10,639.65
  6. Step 6: Final answer
    x = 8,043.81

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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.