Home / 26,077.55-39,121.79-12,928.21

Finding the Fourth Proportional to 26,077.55, 39,121.79 and 12,928.21

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Solution

The fourth proportional to 26,077.55, 39,121.79 and 12,928.21 is: 19,395.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,077.55 : 39,121.79 = 12,928.21 : x
  2. Step 2: Convert to fraction form
    26,077.55/39,121.79 = 12,928.21/x
  3. Step 3: Cross multiply
    26,077.55x = 39,121.79 × 12,928.21
  4. Step 4: Simplify right side
    26,077.55x = 505,774,554.25
  5. Step 5: Solve for x
    x = 505,774,554.25/26,077.55
  6. Step 6: Final answer
    x = 19,395.02

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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.