Home / 19,910.70-29,862.78-7,427.46

Finding the Fourth Proportional to 19,910.70, 29,862.78 and 7,427.46

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Solution

The fourth proportional to 19,910.70, 29,862.78 and 7,427.46 is: 11,139.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,910.70 : 29,862.78 = 7,427.46 : x
  2. Step 2: Convert to fraction form
    19,910.70/29,862.78 = 7,427.46/x
  3. Step 3: Cross multiply
    19,910.70x = 29,862.78 × 7,427.46
  4. Step 4: Simplify right side
    19,910.70x = 221,804,603.94
  5. Step 5: Solve for x
    x = 221,804,603.94/19,910.70
  6. Step 6: Final answer
    x = 11,139.97

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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.