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Finding the Fourth Proportional to 18,802.19, 28,184.52 and 9,413.55

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Solution

The fourth proportional to 18,802.19, 28,184.52 and 9,413.55 is: 14,110.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,802.19 : 28,184.52 = 9,413.55 : x
  2. Step 2: Convert to fraction form
    18,802.19/28,184.52 = 9,413.55/x
  3. Step 3: Cross multiply
    18,802.19x = 28,184.52 × 9,413.55
  4. Step 4: Simplify right side
    18,802.19x = 265,316,388.25
  5. Step 5: Solve for x
    x = 265,316,388.25/18,802.19
  6. Step 6: Final answer
    x = 14,110.93

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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.