Home / 12,921.37-19,365.53-11,248.65

Finding the Fourth Proportional to 12,921.37, 19,365.53 and 11,248.65

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Solution

The fourth proportional to 12,921.37, 19,365.53 and 11,248.65 is: 16,858.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921.37 : 19,365.53 = 11,248.65 : x
  2. Step 2: Convert to fraction form
    12,921.37/19,365.53 = 11,248.65/x
  3. Step 3: Cross multiply
    12,921.37x = 19,365.53 × 11,248.65
  4. Step 4: Simplify right side
    12,921.37x = 217,836,012.79
  5. Step 5: Solve for x
    x = 217,836,012.79/12,921.37
  6. Step 6: Final answer
    x = 16,858.59

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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.