Home / 38,782.05-53,520.50-21,789.32

Finding the Fourth Proportional to 38,782.05, 53,520.50 and 21,789.32

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Solution

The fourth proportional to 38,782.05, 53,520.50 and 21,789.32 is: 30,069.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,782.05 : 53,520.50 = 21,789.32 : x
  2. Step 2: Convert to fraction form
    38,782.05/53,520.50 = 21,789.32/x
  3. Step 3: Cross multiply
    38,782.05x = 53,520.50 × 21,789.32
  4. Step 4: Simplify right side
    38,782.05x = 1,166,174,924.51
  5. Step 5: Solve for x
    x = 1,166,174,924.51/38,782.05
  6. Step 6: Final answer
    x = 30,069.97

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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.