Home / 39,000.96-53,823.81-21,999.09

Finding the Fourth Proportional to 39,000.96, 53,823.81 and 21,999.09

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Solution

The fourth proportional to 39,000.96, 53,823.81 and 21,999.09 is: 30,360.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,000.96 : 53,823.81 = 21,999.09 : x
  2. Step 2: Convert to fraction form
    39,000.96/53,823.81 = 21,999.09/x
  3. Step 3: Cross multiply
    39,000.96x = 53,823.81 × 21,999.09
  4. Step 4: Simplify right side
    39,000.96x = 1,184,074,840.33
  5. Step 5: Solve for x
    x = 1,184,074,840.33/39,000.96
  6. Step 6: Final answer
    x = 30,360.15

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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.