Home / 39,709.09-54,798.65-21,805.26

Finding the Fourth Proportional to 39,709.09, 54,798.65 and 21,805.26

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Solution

The fourth proportional to 39,709.09, 54,798.65 and 21,805.26 is: 30,091.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,709.09 : 54,798.65 = 21,805.26 : x
  2. Step 2: Convert to fraction form
    39,709.09/54,798.65 = 21,805.26/x
  3. Step 3: Cross multiply
    39,709.09x = 54,798.65 × 21,805.26
  4. Step 4: Simplify right side
    39,709.09x = 1,194,898,810.90
  5. Step 5: Solve for x
    x = 1,194,898,810.90/39,709.09
  6. Step 6: Final answer
    x = 30,091.32

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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.