Home / 12,281.44-18,421.74-3,516.28

Finding the Fourth Proportional to 12,281.44, 18,421.74 and 3,516.28

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Solution

The fourth proportional to 12,281.44, 18,421.74 and 3,516.28 is: 5,274.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,281.44 : 18,421.74 = 3,516.28 : x
  2. Step 2: Convert to fraction form
    12,281.44/18,421.74 = 3,516.28/x
  3. Step 3: Cross multiply
    12,281.44x = 18,421.74 × 3,516.28
  4. Step 4: Simplify right side
    12,281.44x = 64,775,995.93
  5. Step 5: Solve for x
    x = 64,775,995.93/12,281.44
  6. Step 6: Final answer
    x = 5,274.30

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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.