Home / 28,135.98-42,203.16-13,334.58

Finding the Fourth Proportional to 28,135.98, 42,203.16 and 13,334.58

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Solution

The fourth proportional to 28,135.98, 42,203.16 and 13,334.58 is: 20,001.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,135.98 : 42,203.16 = 13,334.58 : x
  2. Step 2: Convert to fraction form
    28,135.98/42,203.16 = 13,334.58/x
  3. Step 3: Cross multiply
    28,135.98x = 42,203.16 × 13,334.58
  4. Step 4: Simplify right side
    28,135.98x = 562,761,413.27
  5. Step 5: Solve for x
    x = 562,761,413.27/28,135.98
  6. Step 6: Final answer
    x = 20,001.49

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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.