Home / 21,413.80-32,120.70-9,749.80

Finding the Fourth Proportional to 21,413.80, 32,120.70 and 9,749.80

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Solution

The fourth proportional to 21,413.80, 32,120.70 and 9,749.80 is: 14,624.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,413.80 : 32,120.70 = 9,749.80 : x
  2. Step 2: Convert to fraction form
    21,413.80/32,120.70 = 9,749.80/x
  3. Step 3: Cross multiply
    21,413.80x = 32,120.70 × 9,749.80
  4. Step 4: Simplify right side
    21,413.80x = 313,170,400.86
  5. Step 5: Solve for x
    x = 313,170,400.86/21,413.80
  6. Step 6: Final answer
    x = 14,624.70

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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.