Home / 21,074.76-31,623.06-15,279.21

Finding the Fourth Proportional to 21,074.76, 31,623.06 and 15,279.21

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Solution

The fourth proportional to 21,074.76, 31,623.06 and 15,279.21 is: 22,926.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,074.76 : 31,623.06 = 15,279.21 : x
  2. Step 2: Convert to fraction form
    21,074.76/31,623.06 = 15,279.21/x
  3. Step 3: Cross multiply
    21,074.76x = 31,623.06 × 15,279.21
  4. Step 4: Simplify right side
    21,074.76x = 483,175,374.58
  5. Step 5: Solve for x
    x = 483,175,374.58/21,074.76
  6. Step 6: Final answer
    x = 22,926.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.