Home / 39,780.27-59,670.41-18,940.59

Finding the Fourth Proportional to 39,780.27, 59,670.41 and 18,940.59

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Solution

The fourth proportional to 39,780.27, 59,670.41 and 18,940.59 is: 28,410.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,780.27 : 59,670.41 = 18,940.59 : x
  2. Step 2: Convert to fraction form
    39,780.27/59,670.41 = 18,940.59/x
  3. Step 3: Cross multiply
    39,780.27x = 59,670.41 × 18,940.59
  4. Step 4: Simplify right side
    39,780.27x = 1,130,192,676.24
  5. Step 5: Solve for x
    x = 1,130,192,676.24/39,780.27
  6. Step 6: Final answer
    x = 28,410.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.