Home / 28,733.23-39,665.80-19,178.78

Finding the Fourth Proportional to 28,733.23, 39,665.80 and 19,178.78

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Solution

The fourth proportional to 28,733.23, 39,665.80 and 19,178.78 is: 26,476.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,733.23 : 39,665.80 = 19,178.78 : x
  2. Step 2: Convert to fraction form
    28,733.23/39,665.80 = 19,178.78/x
  3. Step 3: Cross multiply
    28,733.23x = 39,665.80 × 19,178.78
  4. Step 4: Simplify right side
    28,733.23x = 760,741,477.37
  5. Step 5: Solve for x
    x = 760,741,477.37/28,733.23
  6. Step 6: Final answer
    x = 26,476.02

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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.