Home / 21,163.05-31,740.01-8,670.82

Finding the Fourth Proportional to 21,163.05, 31,740.01 and 8,670.82

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Solution

The fourth proportional to 21,163.05, 31,740.01 and 8,670.82 is: 13,004.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.05 : 31,740.01 = 8,670.82 : x
  2. Step 2: Convert to fraction form
    21,163.05/31,740.01 = 8,670.82/x
  3. Step 3: Cross multiply
    21,163.05x = 31,740.01 × 8,670.82
  4. Step 4: Simplify right side
    21,163.05x = 275,211,913.51
  5. Step 5: Solve for x
    x = 275,211,913.51/21,163.05
  6. Step 6: Final answer
    x = 13,004.36

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1.5x scale

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.