Home / 12,955.92-19,431.16-4,186.06

Finding the Fourth Proportional to 12,955.92, 19,431.16 and 4,186.06

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Solution

The fourth proportional to 12,955.92, 19,431.16 and 4,186.06 is: 6,278.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,955.92 : 19,431.16 = 4,186.06 : x
  2. Step 2: Convert to fraction form
    12,955.92/19,431.16 = 4,186.06/x
  3. Step 3: Cross multiply
    12,955.92x = 19,431.16 × 4,186.06
  4. Step 4: Simplify right side
    12,955.92x = 81,340,001.63
  5. Step 5: Solve for x
    x = 81,340,001.63/12,955.92
  6. Step 6: Final answer
    x = 6,278.21

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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.