Home / 14,756.88-20,357.28-8,786.64

Finding the Fourth Proportional to 14,756.88, 20,357.28 and 8,786.64

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Solution

The fourth proportional to 14,756.88, 20,357.28 and 8,786.64 is: 12,121.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,756.88 : 20,357.28 = 8,786.64 : x
  2. Step 2: Convert to fraction form
    14,756.88/20,357.28 = 8,786.64/x
  3. Step 3: Cross multiply
    14,756.88x = 20,357.28 × 8,786.64
  4. Step 4: Simplify right side
    14,756.88x = 178,872,090.74
  5. Step 5: Solve for x
    x = 178,872,090.74/14,756.88
  6. Step 6: Final answer
    x = 12,121.27

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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.