Home / 12,961.03-19,436.76-4,638.79

Finding the Fourth Proportional to 12,961.03, 19,436.76 and 4,638.79

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Solution

The fourth proportional to 12,961.03, 19,436.76 and 4,638.79 is: 6,956.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,961.03 : 19,436.76 = 4,638.79 : x
  2. Step 2: Convert to fraction form
    12,961.03/19,436.76 = 4,638.79/x
  3. Step 3: Cross multiply
    12,961.03x = 19,436.76 × 4,638.79
  4. Step 4: Simplify right side
    12,961.03x = 90,163,047.92
  5. Step 5: Solve for x
    x = 90,163,047.92/12,961.03
  6. Step 6: Final answer
    x = 6,956.47

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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.