Home / 15,485.81-21,379.28-10,196

Finding the Fourth Proportional to 15,485.81, 21,379.28 and 10,196

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Solution

The fourth proportional to 15,485.81, 21,379.28 and 10,196 is: 14,076.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,485.81 : 21,379.28 = 10,196 : x
  2. Step 2: Convert to fraction form
    15,485.81/21,379.28 = 10,196/x
  3. Step 3: Cross multiply
    15,485.81x = 21,379.28 × 10,196
  4. Step 4: Simplify right side
    15,485.81x = 217,983,138.88
  5. Step 5: Solve for x
    x = 217,983,138.88/15,485.81
  6. Step 6: Final answer
    x = 14,076.31

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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.