Home / 30,139.48-45,203.04-11,413.06

Finding the Fourth Proportional to 30,139.48, 45,203.04 and 11,413.06

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Solution

The fourth proportional to 30,139.48, 45,203.04 and 11,413.06 is: 17,117.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,139.48 : 45,203.04 = 11,413.06 : x
  2. Step 2: Convert to fraction form
    30,139.48/45,203.04 = 11,413.06/x
  3. Step 3: Cross multiply
    30,139.48x = 45,203.04 × 11,413.06
  4. Step 4: Simplify right side
    30,139.48x = 515,904,923.23
  5. Step 5: Solve for x
    x = 515,904,923.23/30,139.48
  6. Step 6: Final answer
    x = 17,117.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.