Home / 12,828.72-19,221.20-10,364.70

Finding the Fourth Proportional to 12,828.72, 19,221.20 and 10,364.70

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Solution

The fourth proportional to 12,828.72, 19,221.20 and 10,364.70 is: 15,529.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,828.72 : 19,221.20 = 10,364.70 : x
  2. Step 2: Convert to fraction form
    12,828.72/19,221.20 = 10,364.70/x
  3. Step 3: Cross multiply
    12,828.72x = 19,221.20 × 10,364.70
  4. Step 4: Simplify right side
    12,828.72x = 199,221,971.64
  5. Step 5: Solve for x
    x = 199,221,971.64/12,828.72
  6. Step 6: Final answer
    x = 15,529.37

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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.