Home / 45,319.82-67,979.75-13,729.55

Finding the Fourth Proportional to 45,319.82, 67,979.75 and 13,729.55

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Solution

The fourth proportional to 45,319.82, 67,979.75 and 13,729.55 is: 20,594.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,319.82 : 67,979.75 = 13,729.55 : x
  2. Step 2: Convert to fraction form
    45,319.82/67,979.75 = 13,729.55/x
  3. Step 3: Cross multiply
    45,319.82x = 67,979.75 × 13,729.55
  4. Step 4: Simplify right side
    45,319.82x = 933,330,968.07
  5. Step 5: Solve for x
    x = 933,330,968.07/45,319.82
  6. Step 6: Final answer
    x = 20,594.32

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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.