Home / 14,939.04-20,622.96-8,649.12

Finding the Fourth Proportional to 14,939.04, 20,622.96 and 8,649.12

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Solution

The fourth proportional to 14,939.04, 20,622.96 and 8,649.12 is: 11,939.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,939.04 : 20,622.96 = 8,649.12 : x
  2. Step 2: Convert to fraction form
    14,939.04/20,622.96 = 8,649.12/x
  3. Step 3: Cross multiply
    14,939.04x = 20,622.96 × 8,649.12
  4. Step 4: Simplify right side
    14,939.04x = 178,370,455.80
  5. Step 5: Solve for x
    x = 178,370,455.80/14,939.04
  6. Step 6: Final answer
    x = 11,939.89

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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.