Home / 12,877.54-19,288.72-9,722.79

Finding the Fourth Proportional to 12,877.54, 19,288.72 and 9,722.79

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Solution

The fourth proportional to 12,877.54, 19,288.72 and 9,722.79 is: 14,563.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,877.54 : 19,288.72 = 9,722.79 : x
  2. Step 2: Convert to fraction form
    12,877.54/19,288.72 = 9,722.79/x
  3. Step 3: Cross multiply
    12,877.54x = 19,288.72 × 9,722.79
  4. Step 4: Simplify right side
    12,877.54x = 187,540,173.93
  5. Step 5: Solve for x
    x = 187,540,173.93/12,877.54
  6. Step 6: Final answer
    x = 14,563.35

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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.