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Finding the Fourth Proportional to 18,382.60, 27,587.81 and 13,465.02

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Solution

The fourth proportional to 18,382.60, 27,587.81 and 13,465.02 is: 20,207.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,382.60 : 27,587.81 = 13,465.02 : x
  2. Step 2: Convert to fraction form
    18,382.60/27,587.81 = 13,465.02/x
  3. Step 3: Cross multiply
    18,382.60x = 27,587.81 × 13,465.02
  4. Step 4: Simplify right side
    18,382.60x = 371,470,413.41
  5. Step 5: Solve for x
    x = 371,470,413.41/18,382.60
  6. Step 6: Final answer
    x = 20,207.72

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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.