Home / 14,506.50-20,021.80-8,218.88

Finding the Fourth Proportional to 14,506.50, 20,021.80 and 8,218.88

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Solution

The fourth proportional to 14,506.50, 20,021.80 and 8,218.88 is: 11,343.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,506.50 : 20,021.80 = 8,218.88 : x
  2. Step 2: Convert to fraction form
    14,506.50/20,021.80 = 8,218.88/x
  3. Step 3: Cross multiply
    14,506.50x = 20,021.80 × 8,218.88
  4. Step 4: Simplify right side
    14,506.50x = 164,556,771.58
  5. Step 5: Solve for x
    x = 164,556,771.58/14,506.50
  6. Step 6: Final answer
    x = 11,343.66

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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.