Home / 12,785.42-19,181.20-4,020.32

Finding the Fourth Proportional to 12,785.42, 19,181.20 and 4,020.32

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Solution

The fourth proportional to 12,785.42, 19,181.20 and 4,020.32 is: 6,031.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,785.42 : 19,181.20 = 4,020.32 : x
  2. Step 2: Convert to fraction form
    12,785.42/19,181.20 = 4,020.32/x
  3. Step 3: Cross multiply
    12,785.42x = 19,181.20 × 4,020.32
  4. Step 4: Simplify right side
    12,785.42x = 77,114,561.98
  5. Step 5: Solve for x
    x = 77,114,561.98/12,785.42
  6. Step 6: Final answer
    x = 6,031.45

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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.