Home / 12,882.10-19,330.35-5,485.30

Finding the Fourth Proportional to 12,882.10, 19,330.35 and 5,485.30

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Solution

The fourth proportional to 12,882.10, 19,330.35 and 5,485.30 is: 8,231.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,882.10 : 19,330.35 = 5,485.30 : x
  2. Step 2: Convert to fraction form
    12,882.10/19,330.35 = 5,485.30/x
  3. Step 3: Cross multiply
    12,882.10x = 19,330.35 × 5,485.30
  4. Step 4: Simplify right side
    12,882.10x = 106,032,768.86
  5. Step 5: Solve for x
    x = 106,032,768.86/12,882.10
  6. Step 6: Final answer
    x = 8,231.02

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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.