Home / 13,271.78-19,903.39-4,385.09

Finding the Fourth Proportional to 13,271.78, 19,903.39 and 4,385.09

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Solution

The fourth proportional to 13,271.78, 19,903.39 and 4,385.09 is: 6,576.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,271.78 : 19,903.39 = 4,385.09 : x
  2. Step 2: Convert to fraction form
    13,271.78/19,903.39 = 4,385.09/x
  3. Step 3: Cross multiply
    13,271.78x = 19,903.39 × 4,385.09
  4. Step 4: Simplify right side
    13,271.78x = 87,278,035.01
  5. Step 5: Solve for x
    x = 87,278,035.01/13,271.78
  6. Step 6: Final answer
    x = 6,576.21

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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.