Home / 12,020.10-18,031.86-3,700.80

Finding the Fourth Proportional to 12,020.10, 18,031.86 and 3,700.80

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Solution

The fourth proportional to 12,020.10, 18,031.86 and 3,700.80 is: 5,551.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,020.10 : 18,031.86 = 3,700.80 : x
  2. Step 2: Convert to fraction form
    12,020.10/18,031.86 = 3,700.80/x
  3. Step 3: Cross multiply
    12,020.10x = 18,031.86 × 3,700.80
  4. Step 4: Simplify right side
    12,020.10x = 66,732,307.49
  5. Step 5: Solve for x
    x = 66,732,307.49/12,020.10
  6. Step 6: Final answer
    x = 5,551.73

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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.