Home / 21,350.57-29,463.75-11,919.15

Finding the Fourth Proportional to 21,350.57, 29,463.75 and 11,919.15

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Solution

The fourth proportional to 21,350.57, 29,463.75 and 11,919.15 is: 16,448.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,350.57 : 29,463.75 = 11,919.15 : x
  2. Step 2: Convert to fraction form
    21,350.57/29,463.75 = 11,919.15/x
  3. Step 3: Cross multiply
    21,350.57x = 29,463.75 × 11,919.15
  4. Step 4: Simplify right side
    21,350.57x = 351,182,855.81
  5. Step 5: Solve for x
    x = 351,182,855.81/21,350.57
  6. Step 6: Final answer
    x = 16,448.41

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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.