Home / 14,413.12-19,890.30-8,125.63

Finding the Fourth Proportional to 14,413.12, 19,890.30 and 8,125.63

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Solution

The fourth proportional to 14,413.12, 19,890.30 and 8,125.63 is: 11,213.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,413.12 : 19,890.30 = 8,125.63 : x
  2. Step 2: Convert to fraction form
    14,413.12/19,890.30 = 8,125.63/x
  3. Step 3: Cross multiply
    14,413.12x = 19,890.30 × 8,125.63
  4. Step 4: Simplify right side
    14,413.12x = 161,621,218.39
  5. Step 5: Solve for x
    x = 161,621,218.39/14,413.12
  6. Step 6: Final answer
    x = 11,213.48

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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.