Home / 43,939-65,919.74-12,774.25

Finding the Fourth Proportional to 43,939, 65,919.74 and 12,774.25

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Solution

The fourth proportional to 43,939, 65,919.74 and 12,774.25 is: 19,164.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,939 : 65,919.74 = 12,774.25 : x
  2. Step 2: Convert to fraction form
    43,939/65,919.74 = 12,774.25/x
  3. Step 3: Cross multiply
    43,939x = 65,919.74 × 12,774.25
  4. Step 4: Simplify right side
    43,939x = 842,075,270.63
  5. Step 5: Solve for x
    x = 842,075,270.63/43,939
  6. Step 6: Final answer
    x = 19,164.64

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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.