Home / 14,378.88-21,556.80-7,455.36

Finding the Fourth Proportional to 14,378.88, 21,556.80 and 7,455.36

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Solution

The fourth proportional to 14,378.88, 21,556.80 and 7,455.36 is: 11,177.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,378.88 : 21,556.80 = 7,455.36 : x
  2. Step 2: Convert to fraction form
    14,378.88/21,556.80 = 7,455.36/x
  3. Step 3: Cross multiply
    14,378.88x = 21,556.80 × 7,455.36
  4. Step 4: Simplify right side
    14,378.88x = 160,713,704.45
  5. Step 5: Solve for x
    x = 160,713,704.45/14,378.88
  6. Step 6: Final answer
    x = 11,177.07

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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.