Home / 12,690.61-19,035.47-3,330.56

Finding the Fourth Proportional to 12,690.61, 19,035.47 and 3,330.56

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Solution

The fourth proportional to 12,690.61, 19,035.47 and 3,330.56 is: 4,995.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,690.61 : 19,035.47 = 3,330.56 : x
  2. Step 2: Convert to fraction form
    12,690.61/19,035.47 = 3,330.56/x
  3. Step 3: Cross multiply
    12,690.61x = 19,035.47 × 3,330.56
  4. Step 4: Simplify right side
    12,690.61x = 63,398,774.96
  5. Step 5: Solve for x
    x = 63,398,774.96/12,690.61
  6. Step 6: Final answer
    x = 4,995.72

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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.