Home / 30,139.80-45,203.51-11,413.37

Finding the Fourth Proportional to 30,139.80, 45,203.51 and 11,413.37

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Solution

The fourth proportional to 30,139.80, 45,203.51 and 11,413.37 is: 17,117.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,139.80 : 45,203.51 = 11,413.37 : x
  2. Step 2: Convert to fraction form
    30,139.80/45,203.51 = 11,413.37/x
  3. Step 3: Cross multiply
    30,139.80x = 45,203.51 × 11,413.37
  4. Step 4: Simplify right side
    30,139.80x = 515,924,101.84
  5. Step 5: Solve for x
    x = 515,924,101.84/30,139.80
  6. Step 6: Final answer
    x = 17,117.70

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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.