Home / 15,723-21,698.34-8,649.27

Finding the Fourth Proportional to 15,723, 21,698.34 and 8,649.27

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Solution

The fourth proportional to 15,723, 21,698.34 and 8,649.27 is: 11,936.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,723 : 21,698.34 = 8,649.27 : x
  2. Step 2: Convert to fraction form
    15,723/21,698.34 = 8,649.27/x
  3. Step 3: Cross multiply
    15,723x = 21,698.34 × 8,649.27
  4. Step 4: Simplify right side
    15,723x = 187,674,801.21
  5. Step 5: Solve for x
    x = 187,674,801.21/15,723
  6. Step 6: Final answer
    x = 11,936.32

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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.