Home / 14,039.51-21,051.41-5,709.78

Finding the Fourth Proportional to 14,039.51, 21,051.41 and 5,709.78

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Solution

The fourth proportional to 14,039.51, 21,051.41 and 5,709.78 is: 8,561.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,039.51 : 21,051.41 = 5,709.78 : x
  2. Step 2: Convert to fraction form
    14,039.51/21,051.41 = 5,709.78/x
  3. Step 3: Cross multiply
    14,039.51x = 21,051.41 × 5,709.78
  4. Step 4: Simplify right side
    14,039.51x = 120,198,919.79
  5. Step 5: Solve for x
    x = 120,198,919.79/14,039.51
  6. Step 6: Final answer
    x = 8,561.48

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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.