Home / 28,585.98-39,428.96-20,106.09

Finding the Fourth Proportional to 28,585.98, 39,428.96 and 20,106.09

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Solution

The fourth proportional to 28,585.98, 39,428.96 and 20,106.09 is: 27,732.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,585.98 : 39,428.96 = 20,106.09 : x
  2. Step 2: Convert to fraction form
    28,585.98/39,428.96 = 20,106.09/x
  3. Step 3: Cross multiply
    28,585.98x = 39,428.96 × 20,106.09
  4. Step 4: Simplify right side
    28,585.98x = 792,762,218.37
  5. Step 5: Solve for x
    x = 792,762,218.37/28,585.98
  6. Step 6: Final answer
    x = 27,732.55

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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.