Home / 20,684.09-28,537.07-12,723.41

Finding the Fourth Proportional to 20,684.09, 28,537.07 and 12,723.41

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Solution

The fourth proportional to 20,684.09, 28,537.07 and 12,723.41 is: 17,554.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,684.09 : 28,537.07 = 12,723.41 : x
  2. Step 2: Convert to fraction form
    20,684.09/28,537.07 = 12,723.41/x
  3. Step 3: Cross multiply
    20,684.09x = 28,537.07 × 12,723.41
  4. Step 4: Simplify right side
    20,684.09x = 363,088,635.51
  5. Step 5: Solve for x
    x = 363,088,635.51/20,684.09
  6. Step 6: Final answer
    x = 17,554.01

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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.