Home / 12,849.60-19,274.40-4,085.40

Finding the Fourth Proportional to 12,849.60, 19,274.40 and 4,085.40

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Solution

The fourth proportional to 12,849.60, 19,274.40 and 4,085.40 is: 6,128.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,849.60 : 19,274.40 = 4,085.40 : x
  2. Step 2: Convert to fraction form
    12,849.60/19,274.40 = 4,085.40/x
  3. Step 3: Cross multiply
    12,849.60x = 19,274.40 × 4,085.40
  4. Step 4: Simplify right side
    12,849.60x = 78,743,633.76
  5. Step 5: Solve for x
    x = 78,743,633.76/12,849.60
  6. Step 6: Final answer
    x = 6,128.10

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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.