Home / 38,840.80-53,593.68-21,840.64

Finding the Fourth Proportional to 38,840.80, 53,593.68 and 21,840.64

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Solution

The fourth proportional to 38,840.80, 53,593.68 and 21,840.64 is: 30,136.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,840.80 : 53,593.68 = 21,840.64 : x
  2. Step 2: Convert to fraction form
    38,840.80/53,593.68 = 21,840.64/x
  3. Step 3: Cross multiply
    38,840.80x = 53,593.68 × 21,840.64
  4. Step 4: Simplify right side
    38,840.80x = 1,170,520,271.16
  5. Step 5: Solve for x
    x = 1,170,520,271.16/38,840.80
  6. Step 6: Final answer
    x = 30,136.36

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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.