Home / 15,228.45-21,015.73-8,514.36

Finding the Fourth Proportional to 15,228.45, 21,015.73 and 8,514.36

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Solution

The fourth proportional to 15,228.45, 21,015.73 and 8,514.36 is: 11,750.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,228.45 : 21,015.73 = 8,514.36 : x
  2. Step 2: Convert to fraction form
    15,228.45/21,015.73 = 8,514.36/x
  3. Step 3: Cross multiply
    15,228.45x = 21,015.73 × 8,514.36
  4. Step 4: Simplify right side
    15,228.45x = 178,935,490.88
  5. Step 5: Solve for x
    x = 178,935,490.88/15,228.45
  6. Step 6: Final answer
    x = 11,750.08

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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.