Home / 12,477.12-18,715.68-3,242.88

Finding the Fourth Proportional to 12,477.12, 18,715.68 and 3,242.88

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Solution

The fourth proportional to 12,477.12, 18,715.68 and 3,242.88 is: 4,864.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,477.12 : 18,715.68 = 3,242.88 : x
  2. Step 2: Convert to fraction form
    12,477.12/18,715.68 = 3,242.88/x
  3. Step 3: Cross multiply
    12,477.12x = 18,715.68 × 3,242.88
  4. Step 4: Simplify right side
    12,477.12x = 60,692,704.36
  5. Step 5: Solve for x
    x = 60,692,704.36/12,477.12
  6. Step 6: Final answer
    x = 4,864.32

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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.