Home / 15,738.74-21,719.04-8,664.20

Finding the Fourth Proportional to 15,738.74, 21,719.04 and 8,664.20

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Solution

The fourth proportional to 15,738.74, 21,719.04 and 8,664.20 is: 11,956.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,738.74 : 21,719.04 = 8,664.20 : x
  2. Step 2: Convert to fraction form
    15,738.74/21,719.04 = 8,664.20/x
  3. Step 3: Cross multiply
    15,738.74x = 21,719.04 × 8,664.20
  4. Step 4: Simplify right side
    15,738.74x = 188,178,106.37
  5. Step 5: Solve for x
    x = 188,178,106.37/15,738.74
  6. Step 6: Final answer
    x = 11,956.36

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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.