Home / 12,018.87-18,030.35-3,698.70

Finding the Fourth Proportional to 12,018.87, 18,030.35 and 3,698.70

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Solution

The fourth proportional to 12,018.87, 18,030.35 and 3,698.70 is: 5,548.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,018.87 : 18,030.35 = 3,698.70 : x
  2. Step 2: Convert to fraction form
    12,018.87/18,030.35 = 3,698.70/x
  3. Step 3: Cross multiply
    12,018.87x = 18,030.35 × 3,698.70
  4. Step 4: Simplify right side
    12,018.87x = 66,688,855.55
  5. Step 5: Solve for x
    x = 66,688,855.55/12,018.87
  6. Step 6: Final answer
    x = 5,548.68

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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.