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Finding the Fourth Proportional to 19,615.40, 29,413.02 and 5,762.60

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Solution

The fourth proportional to 19,615.40, 29,413.02 and 5,762.60 is: 8,640.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,615.40 : 29,413.02 = 5,762.60 : x
  2. Step 2: Convert to fraction form
    19,615.40/29,413.02 = 5,762.60/x
  3. Step 3: Cross multiply
    19,615.40x = 29,413.02 × 5,762.60
  4. Step 4: Simplify right side
    19,615.40x = 169,495,469.05
  5. Step 5: Solve for x
    x = 169,495,469.05/19,615.40
  6. Step 6: Final answer
    x = 8,640.94

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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.