Home / 15,723.21-21,698.03-8,649.59

Finding the Fourth Proportional to 15,723.21, 21,698.03 and 8,649.59

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Solution

The fourth proportional to 15,723.21, 21,698.03 and 8,649.59 is: 11,936.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,723.21 : 21,698.03 = 8,649.59 : x
  2. Step 2: Convert to fraction form
    15,723.21/21,698.03 = 8,649.59/x
  3. Step 3: Cross multiply
    15,723.21x = 21,698.03 × 8,649.59
  4. Step 4: Simplify right side
    15,723.21x = 187,678,927.79
  5. Step 5: Solve for x
    x = 187,678,927.79/15,723.21
  6. Step 6: Final answer
    x = 11,936.42

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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.