Home / 13,305.75-19,961.32-4,985.56

Finding the Fourth Proportional to 13,305.75, 19,961.32 and 4,985.56

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Solution

The fourth proportional to 13,305.75, 19,961.32 and 4,985.56 is: 7,479.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,305.75 : 19,961.32 = 4,985.56 : x
  2. Step 2: Convert to fraction form
    13,305.75/19,961.32 = 4,985.56/x
  3. Step 3: Cross multiply
    13,305.75x = 19,961.32 × 4,985.56
  4. Step 4: Simplify right side
    13,305.75x = 99,518,358.54
  5. Step 5: Solve for x
    x = 99,518,358.54/13,305.75
  6. Step 6: Final answer
    x = 7,479.35

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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.