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Finding the Fourth Proportional to 18,413.01, 25,401.87 and 12,442.50

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Solution

The fourth proportional to 18,413.01, 25,401.87 and 12,442.50 is: 17,165.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,413.01 : 25,401.87 = 12,442.50 : x
  2. Step 2: Convert to fraction form
    18,413.01/25,401.87 = 12,442.50/x
  3. Step 3: Cross multiply
    18,413.01x = 25,401.87 × 12,442.50
  4. Step 4: Simplify right side
    18,413.01x = 316,062,767.48
  5. Step 5: Solve for x
    x = 316,062,767.48/18,413.01
  6. Step 6: Final answer
    x = 17,165.19

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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.