Home / 21,176.34-31,760.83-7,847.79

Finding the Fourth Proportional to 21,176.34, 31,760.83 and 7,847.79

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Solution

The fourth proportional to 21,176.34, 31,760.83 and 7,847.79 is: 11,770.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,176.34 : 31,760.83 = 7,847.79 : x
  2. Step 2: Convert to fraction form
    21,176.34/31,760.83 = 7,847.79/x
  3. Step 3: Cross multiply
    21,176.34x = 31,760.83 × 7,847.79
  4. Step 4: Simplify right side
    21,176.34x = 249,252,324.07
  5. Step 5: Solve for x
    x = 249,252,324.07/21,176.34
  6. Step 6: Final answer
    x = 11,770.32

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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.