Home / 39,520.89-54,538.06-21,615.84

Finding the Fourth Proportional to 39,520.89, 54,538.06 and 21,615.84

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Solution

The fourth proportional to 39,520.89, 54,538.06 and 21,615.84 is: 29,829.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,520.89 : 54,538.06 = 21,615.84 : x
  2. Step 2: Convert to fraction form
    39,520.89/54,538.06 = 21,615.84/x
  3. Step 3: Cross multiply
    39,520.89x = 54,538.06 × 21,615.84
  4. Step 4: Simplify right side
    39,520.89x = 1,178,885,978.87
  5. Step 5: Solve for x
    x = 1,178,885,978.87/39,520.89
  6. Step 6: Final answer
    x = 29,829.44

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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.