Home / 21,917.45-32,884.45-13,158.47

Finding the Fourth Proportional to 21,917.45, 32,884.45 and 13,158.47

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Solution

The fourth proportional to 21,917.45, 32,884.45 and 13,158.47 is: 19,742.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,917.45 : 32,884.45 = 13,158.47 : x
  2. Step 2: Convert to fraction form
    21,917.45/32,884.45 = 13,158.47/x
  3. Step 3: Cross multiply
    21,917.45x = 32,884.45 × 13,158.47
  4. Step 4: Simplify right side
    21,917.45x = 432,708,851.47
  5. Step 5: Solve for x
    x = 432,708,851.47/21,917.45
  6. Step 6: Final answer
    x = 19,742.67

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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.