Home / 15,744.21-21,726.21-8,670.48

Finding the Fourth Proportional to 15,744.21, 21,726.21 and 8,670.48

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Solution

The fourth proportional to 15,744.21, 21,726.21 and 8,670.48 is: 11,964.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,744.21 : 21,726.21 = 8,670.48 : x
  2. Step 2: Convert to fraction form
    15,744.21/21,726.21 = 8,670.48/x
  3. Step 3: Cross multiply
    15,744.21x = 21,726.21 × 8,670.48
  4. Step 4: Simplify right side
    15,744.21x = 188,376,669.28
  5. Step 5: Solve for x
    x = 188,376,669.28/15,744.21
  6. Step 6: Final answer
    x = 11,964.82

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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.