Home / 18,413.48-25,406.18-10,859.20

Finding the Fourth Proportional to 18,413.48, 25,406.18 and 10,859.20

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Solution

The fourth proportional to 18,413.48, 25,406.18 and 10,859.20 is: 14,983.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,413.48 : 25,406.18 = 10,859.20 : x
  2. Step 2: Convert to fraction form
    18,413.48/25,406.18 = 10,859.20/x
  3. Step 3: Cross multiply
    18,413.48x = 25,406.18 × 10,859.20
  4. Step 4: Simplify right side
    18,413.48x = 275,890,789.86
  5. Step 5: Solve for x
    x = 275,890,789.86/18,413.48
  6. Step 6: Final answer
    x = 14,983.09

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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.