Home / 21,147.28-31,725.56-6,357.52

Finding the Fourth Proportional to 21,147.28, 31,725.56 and 6,357.52

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Solution

The fourth proportional to 21,147.28, 31,725.56 and 6,357.52 is: 9,537.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,147.28 : 31,725.56 = 6,357.52 : x
  2. Step 2: Convert to fraction form
    21,147.28/31,725.56 = 6,357.52/x
  3. Step 3: Cross multiply
    21,147.28x = 31,725.56 × 6,357.52
  4. Step 4: Simplify right side
    21,147.28x = 201,695,882.21
  5. Step 5: Solve for x
    x = 201,695,882.21/21,147.28
  6. Step 6: Final answer
    x = 9,537.67

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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.