Home / 20,413.08-28,168.02-12,457.26

Finding the Fourth Proportional to 20,413.08, 28,168.02 and 12,457.26

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Solution

The fourth proportional to 20,413.08, 28,168.02 and 12,457.26 is: 17,189.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,413.08 : 28,168.02 = 12,457.26 : x
  2. Step 2: Convert to fraction form
    20,413.08/28,168.02 = 12,457.26/x
  3. Step 3: Cross multiply
    20,413.08x = 28,168.02 × 12,457.26
  4. Step 4: Simplify right side
    20,413.08x = 350,896,348.83
  5. Step 5: Solve for x
    x = 350,896,348.83/20,413.08
  6. Step 6: Final answer
    x = 17,189.78

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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.