Home / 13,729.96-18,947.37-7,442.29

Finding the Fourth Proportional to 13,729.96, 18,947.37 and 7,442.29

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Solution

The fourth proportional to 13,729.96, 18,947.37 and 7,442.29 is: 10,270.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,729.96 : 18,947.37 = 7,442.29 : x
  2. Step 2: Convert to fraction form
    13,729.96/18,947.37 = 7,442.29/x
  3. Step 3: Cross multiply
    13,729.96x = 18,947.37 × 7,442.29
  4. Step 4: Simplify right side
    13,729.96x = 141,011,822.28
  5. Step 5: Solve for x
    x = 141,011,822.28/13,729.96
  6. Step 6: Final answer
    x = 10,270.37

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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.