Home / 40,806.82-61,188.69-12,721.64

Finding the Fourth Proportional to 40,806.82, 61,188.69 and 12,721.64

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Solution

The fourth proportional to 40,806.82, 61,188.69 and 12,721.64 is: 19,075.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,806.82 : 61,188.69 = 12,721.64 : x
  2. Step 2: Convert to fraction form
    40,806.82/61,188.69 = 12,721.64/x
  3. Step 3: Cross multiply
    40,806.82x = 61,188.69 × 12,721.64
  4. Step 4: Simplify right side
    40,806.82x = 778,420,365.08
  5. Step 5: Solve for x
    x = 778,420,365.08/40,806.82
  6. Step 6: Final answer
    x = 19,075.74

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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.