Home / 15,708.07-21,676.84-8,634.34

Finding the Fourth Proportional to 15,708.07, 21,676.84 and 8,634.34

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Solution

The fourth proportional to 15,708.07, 21,676.84 and 8,634.34 is: 11,915.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,708.07 : 21,676.84 = 8,634.34 : x
  2. Step 2: Convert to fraction form
    15,708.07/21,676.84 = 8,634.34/x
  3. Step 3: Cross multiply
    15,708.07x = 21,676.84 × 8,634.34
  4. Step 4: Simplify right side
    15,708.07x = 187,165,206.69
  5. Step 5: Solve for x
    x = 187,165,206.69/15,708.07
  6. Step 6: Final answer
    x = 11,915.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.