Home / 21,350.45-29,462.40-11,919.62

Finding the Fourth Proportional to 21,350.45, 29,462.40 and 11,919.62

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Solution

The fourth proportional to 21,350.45, 29,462.40 and 11,919.62 is: 16,448.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,350.45 : 29,462.40 = 11,919.62 : x
  2. Step 2: Convert to fraction form
    21,350.45/29,462.40 = 11,919.62/x
  3. Step 3: Cross multiply
    21,350.45x = 29,462.40 × 11,919.62
  4. Step 4: Simplify right side
    21,350.45x = 351,180,685.94
  5. Step 5: Solve for x
    x = 351,180,685.94/21,350.45
  6. Step 6: Final answer
    x = 16,448.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.