Home / 21,101.45-31,645.69-10,004.86

Finding the Fourth Proportional to 21,101.45, 31,645.69 and 10,004.86

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Solution

The fourth proportional to 21,101.45, 31,645.69 and 10,004.86 is: 15,004.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101.45 : 31,645.69 = 10,004.86 : x
  2. Step 2: Convert to fraction form
    21,101.45/31,645.69 = 10,004.86/x
  3. Step 3: Cross multiply
    21,101.45x = 31,645.69 × 10,004.86
  4. Step 4: Simplify right side
    21,101.45x = 316,610,698.05
  5. Step 5: Solve for x
    x = 316,610,698.05/21,101.45
  6. Step 6: Final answer
    x = 15,004.22

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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.