Home / 15,723.80-21,698.84-8,650.68

Finding the Fourth Proportional to 15,723.80, 21,698.84 and 8,650.68

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Solution

The fourth proportional to 15,723.80, 21,698.84 and 8,650.68 is: 11,937.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,723.80 : 21,698.84 = 8,650.68 : x
  2. Step 2: Convert to fraction form
    15,723.80/21,698.84 = 8,650.68/x
  3. Step 3: Cross multiply
    15,723.80x = 21,698.84 × 8,650.68
  4. Step 4: Simplify right side
    15,723.80x = 187,709,721.21
  5. Step 5: Solve for x
    x = 187,709,721.21/15,723.80
  6. Step 6: Final answer
    x = 11,937.94

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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.