Home / 20,664.16-28,515.94-11,712.51

Finding the Fourth Proportional to 20,664.16, 28,515.94 and 11,712.51

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Solution

The fourth proportional to 20,664.16, 28,515.94 and 11,712.51 is: 16,162.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,664.16 : 28,515.94 = 11,712.51 : x
  2. Step 2: Convert to fraction form
    20,664.16/28,515.94 = 11,712.51/x
  3. Step 3: Cross multiply
    20,664.16x = 28,515.94 × 11,712.51
  4. Step 4: Simplify right side
    20,664.16x = 333,993,232.41
  5. Step 5: Solve for x
    x = 333,993,232.41/20,664.16
  6. Step 6: Final answer
    x = 16,162.92

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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.