Home / 19,071.36-28,605.60-5,220

Finding the Fourth Proportional to 19,071.36, 28,605.60 and 5,220

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Solution

The fourth proportional to 19,071.36, 28,605.60 and 5,220 is: 7,829.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,071.36 : 28,605.60 = 5,220 : x
  2. Step 2: Convert to fraction form
    19,071.36/28,605.60 = 5,220/x
  3. Step 3: Cross multiply
    19,071.36x = 28,605.60 × 5,220
  4. Step 4: Simplify right side
    19,071.36x = 149,321,232
  5. Step 5: Solve for x
    x = 149,321,232/19,071.36
  6. Step 6: Final answer
    x = 7,829.61

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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.