Home / 12,690.79-19,036.81-3,330.83

Finding the Fourth Proportional to 12,690.79, 19,036.81 and 3,330.83

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Solution

The fourth proportional to 12,690.79, 19,036.81 and 3,330.83 is: 4,996.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,690.79 : 19,036.81 = 3,330.83 : x
  2. Step 2: Convert to fraction form
    12,690.79/19,036.81 = 3,330.83/x
  3. Step 3: Cross multiply
    12,690.79x = 19,036.81 × 3,330.83
  4. Step 4: Simplify right side
    12,690.79x = 63,408,417.12
  5. Step 5: Solve for x
    x = 63,408,417.12/12,690.79
  6. Step 6: Final answer
    x = 4,996.41

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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.