Home / 19,845-27,386.10-11,461.50

Finding the Fourth Proportional to 19,845, 27,386.10 and 11,461.50

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Solution

The fourth proportional to 19,845, 27,386.10 and 11,461.50 is: 15,816.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,845 : 27,386.10 = 11,461.50 : x
  2. Step 2: Convert to fraction form
    19,845/27,386.10 = 11,461.50/x
  3. Step 3: Cross multiply
    19,845x = 27,386.10 × 11,461.50
  4. Step 4: Simplify right side
    19,845x = 313,885,785.15
  5. Step 5: Solve for x
    x = 313,885,785.15/19,845
  6. Step 6: Final answer
    x = 15,816.87

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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.