Home / 20,106.41-27,728.67-12,553.43

Finding the Fourth Proportional to 20,106.41, 27,728.67 and 12,553.43

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Solution

The fourth proportional to 20,106.41, 27,728.67 and 12,553.43 is: 17,312.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,106.41 : 27,728.67 = 12,553.43 : x
  2. Step 2: Convert to fraction form
    20,106.41/27,728.67 = 12,553.43/x
  3. Step 3: Cross multiply
    20,106.41x = 27,728.67 × 12,553.43
  4. Step 4: Simplify right side
    20,106.41x = 348,089,779.19
  5. Step 5: Solve for x
    x = 348,089,779.19/20,106.41
  6. Step 6: Final answer
    x = 17,312.38

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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.