Home / 28,736.59-39,643.46-20,766.19

Finding the Fourth Proportional to 28,736.59, 39,643.46 and 20,766.19

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Solution

The fourth proportional to 28,736.59, 39,643.46 and 20,766.19 is: 28,647.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,736.59 : 39,643.46 = 20,766.19 : x
  2. Step 2: Convert to fraction form
    28,736.59/39,643.46 = 20,766.19/x
  3. Step 3: Cross multiply
    28,736.59x = 39,643.46 × 20,766.19
  4. Step 4: Simplify right side
    28,736.59x = 823,243,476.32
  5. Step 5: Solve for x
    x = 823,243,476.32/28,736.59
  6. Step 6: Final answer
    x = 28,647.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.