Home / 13,815.24-19,031.67-11,415.21

Finding the Fourth Proportional to 13,815.24, 19,031.67 and 11,415.21

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Solution

The fourth proportional to 13,815.24, 19,031.67 and 11,415.21 is: 15,725.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,815.24 : 19,031.67 = 11,415.21 : x
  2. Step 2: Convert to fraction form
    13,815.24/19,031.67 = 11,415.21/x
  3. Step 3: Cross multiply
    13,815.24x = 19,031.67 × 11,415.21
  4. Step 4: Simplify right side
    13,815.24x = 217,250,509.70
  5. Step 5: Solve for x
    x = 217,250,509.70/13,815.24
  6. Step 6: Final answer
    x = 15,725.42

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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.