Home / 13,853.12-20,783.84-6,461.88

Finding the Fourth Proportional to 13,853.12, 20,783.84 and 6,461.88

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Solution

The fourth proportional to 13,853.12, 20,783.84 and 6,461.88 is: 9,694.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,853.12 : 20,783.84 = 6,461.88 : x
  2. Step 2: Convert to fraction form
    13,853.12/20,783.84 = 6,461.88/x
  3. Step 3: Cross multiply
    13,853.12x = 20,783.84 × 6,461.88
  4. Step 4: Simplify right side
    13,853.12x = 134,302,680.02
  5. Step 5: Solve for x
    x = 134,302,680.02/13,853.12
  6. Step 6: Final answer
    x = 9,694.76

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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.