Home / 30,956.21-42,719.74-16,809.05

Finding the Fourth Proportional to 30,956.21, 42,719.74 and 16,809.05

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Solution

The fourth proportional to 30,956.21, 42,719.74 and 16,809.05 is: 23,196.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,956.21 : 42,719.74 = 16,809.05 : x
  2. Step 2: Convert to fraction form
    30,956.21/42,719.74 = 16,809.05/x
  3. Step 3: Cross multiply
    30,956.21x = 42,719.74 × 16,809.05
  4. Step 4: Simplify right side
    30,956.21x = 718,078,310.42
  5. Step 5: Solve for x
    x = 718,078,310.42/30,956.21
  6. Step 6: Final answer
    x = 23,196.59

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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.