Home / 15,128.02-20,874.37-8,413.70

Finding the Fourth Proportional to 15,128.02, 20,874.37 and 8,413.70

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Solution

The fourth proportional to 15,128.02, 20,874.37 and 8,413.70 is: 11,609.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,128.02 : 20,874.37 = 8,413.70 : x
  2. Step 2: Convert to fraction form
    15,128.02/20,874.37 = 8,413.70/x
  3. Step 3: Cross multiply
    15,128.02x = 20,874.37 × 8,413.70
  4. Step 4: Simplify right side
    15,128.02x = 175,630,644.80
  5. Step 5: Solve for x
    x = 175,630,644.80/15,128.02
  6. Step 6: Final answer
    x = 11,609.63

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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.