Home / 38,965.90-53,771.86-21,969.99

Finding the Fourth Proportional to 38,965.90, 53,771.86 and 21,969.99

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Solution

The fourth proportional to 38,965.90, 53,771.86 and 21,969.99 is: 30,317.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,965.90 : 53,771.86 = 21,969.99 : x
  2. Step 2: Convert to fraction form
    38,965.90/53,771.86 = 21,969.99/x
  3. Step 3: Cross multiply
    38,965.90x = 53,771.86 × 21,969.99
  4. Step 4: Simplify right side
    38,965.90x = 1,181,367,226.48
  5. Step 5: Solve for x
    x = 1,181,367,226.48/38,965.90
  6. Step 6: Final answer
    x = 30,317.98

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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.