Home / 12,720.13-17,555.84-7,413.93

Finding the Fourth Proportional to 12,720.13, 17,555.84 and 7,413.93

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Solution

The fourth proportional to 12,720.13, 17,555.84 and 7,413.93 is: 10,232.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,720.13 : 17,555.84 = 7,413.93 : x
  2. Step 2: Convert to fraction form
    12,720.13/17,555.84 = 7,413.93/x
  3. Step 3: Cross multiply
    12,720.13x = 17,555.84 × 7,413.93
  4. Step 4: Simplify right side
    12,720.13x = 130,157,768.85
  5. Step 5: Solve for x
    x = 130,157,768.85/12,720.13
  6. Step 6: Final answer
    x = 10,232.42

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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.