Home / 13,360.44-18,438.78-7,695.36

Finding the Fourth Proportional to 13,360.44, 18,438.78 and 7,695.36

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Solution

The fourth proportional to 13,360.44, 18,438.78 and 7,695.36 is: 10,620.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,360.44 : 18,438.78 = 7,695.36 : x
  2. Step 2: Convert to fraction form
    13,360.44/18,438.78 = 7,695.36/x
  3. Step 3: Cross multiply
    13,360.44x = 18,438.78 × 7,695.36
  4. Step 4: Simplify right side
    13,360.44x = 141,893,050.06
  5. Step 5: Solve for x
    x = 141,893,050.06/13,360.44
  6. Step 6: Final answer
    x = 10,620.39

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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.