Home / 13,186.88-19,783.28-4,421.56

Finding the Fourth Proportional to 13,186.88, 19,783.28 and 4,421.56

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Solution

The fourth proportional to 13,186.88, 19,783.28 and 4,421.56 is: 6,633.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.88 : 19,783.28 = 4,421.56 : x
  2. Step 2: Convert to fraction form
    13,186.88/19,783.28 = 4,421.56/x
  3. Step 3: Cross multiply
    13,186.88x = 19,783.28 × 4,421.56
  4. Step 4: Simplify right side
    13,186.88x = 87,472,959.52
  5. Step 5: Solve for x
    x = 87,472,959.52/13,186.88
  6. Step 6: Final answer
    x = 6,633.33

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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.