Home / 21,546.36-29,724.84-13,158

Finding the Fourth Proportional to 21,546.36, 29,724.84 and 13,158

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Solution

The fourth proportional to 21,546.36, 29,724.84 and 13,158 is: 18,152.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,546.36 : 29,724.84 = 13,158 : x
  2. Step 2: Convert to fraction form
    21,546.36/29,724.84 = 13,158/x
  3. Step 3: Cross multiply
    21,546.36x = 29,724.84 × 13,158
  4. Step 4: Simplify right side
    21,546.36x = 391,119,444.72
  5. Step 5: Solve for x
    x = 391,119,444.72/21,546.36
  6. Step 6: Final answer
    x = 18,152.46

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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.