Home / 21,163.23-31,765.50-10,077.57

Finding the Fourth Proportional to 21,163.23, 31,765.50 and 10,077.57

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Solution

The fourth proportional to 21,163.23, 31,765.50 and 10,077.57 is: 15,126.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.23 : 31,765.50 = 10,077.57 : x
  2. Step 2: Convert to fraction form
    21,163.23/31,765.50 = 10,077.57/x
  3. Step 3: Cross multiply
    21,163.23x = 31,765.50 × 10,077.57
  4. Step 4: Simplify right side
    21,163.23x = 320,119,049.84
  5. Step 5: Solve for x
    x = 320,119,049.84/21,163.23
  6. Step 6: Final answer
    x = 15,126.19

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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.