Home / 12,924.60-19,377.30-5,129.40

Finding the Fourth Proportional to 12,924.60, 19,377.30 and 5,129.40

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Solution

The fourth proportional to 12,924.60, 19,377.30 and 5,129.40 is: 7,690.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,924.60 : 19,377.30 = 5,129.40 : x
  2. Step 2: Convert to fraction form
    12,924.60/19,377.30 = 5,129.40/x
  3. Step 3: Cross multiply
    12,924.60x = 19,377.30 × 5,129.40
  4. Step 4: Simplify right side
    12,924.60x = 99,393,922.62
  5. Step 5: Solve for x
    x = 99,393,922.62/12,924.60
  6. Step 6: Final answer
    x = 7,690.29

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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.