Home / 14,985.39-20,679.50-8,270.61

Finding the Fourth Proportional to 14,985.39, 20,679.50 and 8,270.61

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Solution

The fourth proportional to 14,985.39, 20,679.50 and 8,270.61 is: 11,413.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,985.39 : 20,679.50 = 8,270.61 : x
  2. Step 2: Convert to fraction form
    14,985.39/20,679.50 = 8,270.61/x
  3. Step 3: Cross multiply
    14,985.39x = 20,679.50 × 8,270.61
  4. Step 4: Simplify right side
    14,985.39x = 171,032,197.11
  5. Step 5: Solve for x
    x = 171,032,197.11/14,985.39
  6. Step 6: Final answer
    x = 11,413.26

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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.