Home / 15,447.24-21,332.36-13,196

Finding the Fourth Proportional to 15,447.24, 21,332.36 and 13,196

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Solution

The fourth proportional to 15,447.24, 21,332.36 and 13,196 is: 18,223.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,447.24 : 21,332.36 = 13,196 : x
  2. Step 2: Convert to fraction form
    15,447.24/21,332.36 = 13,196/x
  3. Step 3: Cross multiply
    15,447.24x = 21,332.36 × 13,196
  4. Step 4: Simplify right side
    15,447.24x = 281,501,822.56
  5. Step 5: Solve for x
    x = 281,501,822.56/15,447.24
  6. Step 6: Final answer
    x = 18,223.44

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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.