Home / 12,388.81-18,583.04-3,028.91

Finding the Fourth Proportional to 12,388.81, 18,583.04 and 3,028.91

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Solution

The fourth proportional to 12,388.81, 18,583.04 and 3,028.91 is: 4,543.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,388.81 : 18,583.04 = 3,028.91 : x
  2. Step 2: Convert to fraction form
    12,388.81/18,583.04 = 3,028.91/x
  3. Step 3: Cross multiply
    12,388.81x = 18,583.04 × 3,028.91
  4. Step 4: Simplify right side
    12,388.81x = 56,286,270.34
  5. Step 5: Solve for x
    x = 56,286,270.34/12,388.81
  6. Step 6: Final answer
    x = 4,543.32

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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.