Home / 13,447.31-18,546.17-11,285.36

Finding the Fourth Proportional to 13,447.31, 18,546.17 and 11,285.36

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Solution

The fourth proportional to 13,447.31, 18,546.17 and 11,285.36 is: 15,564.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.31 : 18,546.17 = 11,285.36 : x
  2. Step 2: Convert to fraction form
    13,447.31/18,546.17 = 11,285.36/x
  3. Step 3: Cross multiply
    13,447.31x = 18,546.17 × 11,285.36
  4. Step 4: Simplify right side
    13,447.31x = 209,300,125.46
  5. Step 5: Solve for x
    x = 209,300,125.46/13,447.31
  6. Step 6: Final answer
    x = 15,564.47

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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.