Home / 15,186.78-20,947.32-13,932

Finding the Fourth Proportional to 15,186.78, 20,947.32 and 13,932

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Solution

The fourth proportional to 15,186.78, 20,947.32 and 13,932 is: 19,216.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,186.78 : 20,947.32 = 13,932 : x
  2. Step 2: Convert to fraction form
    15,186.78/20,947.32 = 13,932/x
  3. Step 3: Cross multiply
    15,186.78x = 20,947.32 × 13,932
  4. Step 4: Simplify right side
    15,186.78x = 291,838,062.24
  5. Step 5: Solve for x
    x = 291,838,062.24/15,186.78
  6. Step 6: Final answer
    x = 19,216.59

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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.