Home / 12,921.44-19,384.80-4,156.16

Finding the Fourth Proportional to 12,921.44, 19,384.80 and 4,156.16

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Solution

The fourth proportional to 12,921.44, 19,384.80 and 4,156.16 is: 6,235.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921.44 : 19,384.80 = 4,156.16 : x
  2. Step 2: Convert to fraction form
    12,921.44/19,384.80 = 4,156.16/x
  3. Step 3: Cross multiply
    12,921.44x = 19,384.80 × 4,156.16
  4. Step 4: Simplify right side
    12,921.44x = 80,566,330.37
  5. Step 5: Solve for x
    x = 80,566,330.37/12,921.44
  6. Step 6: Final answer
    x = 6,235.09

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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.