Home / 14,021.40-20,999.70-8,772.60

Finding the Fourth Proportional to 14,021.40, 20,999.70 and 8,772.60

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Solution

The fourth proportional to 14,021.40, 20,999.70 and 8,772.60 is: 13,138.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,021.40 : 20,999.70 = 8,772.60 : x
  2. Step 2: Convert to fraction form
    14,021.40/20,999.70 = 8,772.60/x
  3. Step 3: Cross multiply
    14,021.40x = 20,999.70 × 8,772.60
  4. Step 4: Simplify right side
    14,021.40x = 184,221,968.22
  5. Step 5: Solve for x
    x = 184,221,968.22/14,021.40
  6. Step 6: Final answer
    x = 13,138.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.