Home / 14,072.76-19,420.29-7,785.09

Finding the Fourth Proportional to 14,072.76, 19,420.29 and 7,785.09

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Solution

The fourth proportional to 14,072.76, 19,420.29 and 7,785.09 is: 10,743.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,072.76 : 19,420.29 = 7,785.09 : x
  2. Step 2: Convert to fraction form
    14,072.76/19,420.29 = 7,785.09/x
  3. Step 3: Cross multiply
    14,072.76x = 19,420.29 × 7,785.09
  4. Step 4: Simplify right side
    14,072.76x = 151,188,705.48
  5. Step 5: Solve for x
    x = 151,188,705.48/14,072.76
  6. Step 6: Final answer
    x = 10,743.36

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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.