Home / 15,723.90-21,698.46-8,650.31

Finding the Fourth Proportional to 15,723.90, 21,698.46 and 8,650.31

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Solution

The fourth proportional to 15,723.90, 21,698.46 and 8,650.31 is: 11,937.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,723.90 : 21,698.46 = 8,650.31 : x
  2. Step 2: Convert to fraction form
    15,723.90/21,698.46 = 8,650.31/x
  3. Step 3: Cross multiply
    15,723.90x = 21,698.46 × 8,650.31
  4. Step 4: Simplify right side
    15,723.90x = 187,698,297.03
  5. Step 5: Solve for x
    x = 187,698,297.03/15,723.90
  6. Step 6: Final answer
    x = 11,937.13

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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.