Home / 14,643.90-20,208.15-8,270.75

Finding the Fourth Proportional to 14,643.90, 20,208.15 and 8,270.75

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Solution

The fourth proportional to 14,643.90, 20,208.15 and 8,270.75 is: 11,413.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,643.90 : 20,208.15 = 8,270.75 : x
  2. Step 2: Convert to fraction form
    14,643.90/20,208.15 = 8,270.75/x
  3. Step 3: Cross multiply
    14,643.90x = 20,208.15 × 8,270.75
  4. Step 4: Simplify right side
    14,643.90x = 167,136,607.13
  5. Step 5: Solve for x
    x = 167,136,607.13/14,643.90
  6. Step 6: Final answer
    x = 11,413.39

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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.