Home / 20,605.20-28,413.81-17,630.88

Finding the Fourth Proportional to 20,605.20, 28,413.81 and 17,630.88

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Solution

The fourth proportional to 20,605.20, 28,413.81 and 17,630.88 is: 24,312.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,605.20 : 28,413.81 = 17,630.88 : x
  2. Step 2: Convert to fraction form
    20,605.20/28,413.81 = 17,630.88/x
  3. Step 3: Cross multiply
    20,605.20x = 28,413.81 × 17,630.88
  4. Step 4: Simplify right side
    20,605.20x = 500,960,474.45
  5. Step 5: Solve for x
    x = 500,960,474.45/20,605.20
  6. Step 6: Final answer
    x = 24,312.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.