Home / 20,681.44-31,022.16-5,099.06

Finding the Fourth Proportional to 20,681.44, 31,022.16 and 5,099.06

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Solution

The fourth proportional to 20,681.44, 31,022.16 and 5,099.06 is: 7,648.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681.44 : 31,022.16 = 5,099.06 : x
  2. Step 2: Convert to fraction form
    20,681.44/31,022.16 = 5,099.06/x
  3. Step 3: Cross multiply
    20,681.44x = 31,022.16 × 5,099.06
  4. Step 4: Simplify right side
    20,681.44x = 158,183,913.60
  5. Step 5: Solve for x
    x = 158,183,913.60/20,681.44
  6. Step 6: Final answer
    x = 7,648.59

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1.5x scale

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.