Home / 20,766.51-28,653.08-20,055.15

Finding the Fourth Proportional to 20,766.51, 28,653.08 and 20,055.15

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Solution

The fourth proportional to 20,766.51, 28,653.08 and 20,055.15 is: 27,671.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,766.51 : 28,653.08 = 20,055.15 : x
  2. Step 2: Convert to fraction form
    20,766.51/28,653.08 = 20,055.15/x
  3. Step 3: Cross multiply
    20,766.51x = 28,653.08 × 20,055.15
  4. Step 4: Simplify right side
    20,766.51x = 574,641,717.09
  5. Step 5: Solve for x
    x = 574,641,717.09/20,766.51
  6. Step 6: Final answer
    x = 27,671.56

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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.