Home / 12,447.79-17,177.90-6,782.52

Finding the Fourth Proportional to 12,447.79, 17,177.90 and 6,782.52

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Solution

The fourth proportional to 12,447.79, 17,177.90 and 6,782.52 is: 9,359.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,447.79 : 17,177.90 = 6,782.52 : x
  2. Step 2: Convert to fraction form
    12,447.79/17,177.90 = 6,782.52/x
  3. Step 3: Cross multiply
    12,447.79x = 17,177.90 × 6,782.52
  4. Step 4: Simplify right side
    12,447.79x = 116,509,450.31
  5. Step 5: Solve for x
    x = 116,509,450.31/12,447.79
  6. Step 6: Final answer
    x = 9,359.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.