Home / 39,780.19-59,665.83-10,198.72

Finding the Fourth Proportional to 39,780.19, 59,665.83 and 10,198.72

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Solution

The fourth proportional to 39,780.19, 59,665.83 and 10,198.72 is: 15,296.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,780.19 : 59,665.83 = 10,198.72 : x
  2. Step 2: Convert to fraction form
    39,780.19/59,665.83 = 10,198.72/x
  3. Step 3: Cross multiply
    39,780.19x = 59,665.83 × 10,198.72
  4. Step 4: Simplify right side
    39,780.19x = 608,515,187.44
  5. Step 5: Solve for x
    x = 608,515,187.44/39,780.19
  6. Step 6: Final answer
    x = 15,296.94

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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.