Home / 21,163.28-31,745.18-14,587.70

Finding the Fourth Proportional to 21,163.28, 31,745.18 and 14,587.70

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Solution

The fourth proportional to 21,163.28, 31,745.18 and 14,587.70 is: 21,881.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.28 : 31,745.18 = 14,587.70 : x
  2. Step 2: Convert to fraction form
    21,163.28/31,745.18 = 14,587.70/x
  3. Step 3: Cross multiply
    21,163.28x = 31,745.18 × 14,587.70
  4. Step 4: Simplify right side
    21,163.28x = 463,089,040.03
  5. Step 5: Solve for x
    x = 463,089,040.03/21,163.28
  6. Step 6: Final answer
    x = 21,881.73

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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.