Home / 12,678.64-19,020.18-4,359.52

Finding the Fourth Proportional to 12,678.64, 19,020.18 and 4,359.52

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Solution

The fourth proportional to 12,678.64, 19,020.18 and 4,359.52 is: 6,540.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,678.64 : 19,020.18 = 4,359.52 : x
  2. Step 2: Convert to fraction form
    12,678.64/19,020.18 = 4,359.52/x
  3. Step 3: Cross multiply
    12,678.64x = 19,020.18 × 4,359.52
  4. Step 4: Simplify right side
    12,678.64x = 82,918,855.11
  5. Step 5: Solve for x
    x = 82,918,855.11/12,678.64
  6. Step 6: Final answer
    x = 6,540.04

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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.