Home / 21,709.12-29,932.32-18,346

Finding the Fourth Proportional to 21,709.12, 29,932.32 and 18,346

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Solution

The fourth proportional to 21,709.12, 29,932.32 and 18,346 is: 25,295.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,709.12 : 29,932.32 = 18,346 : x
  2. Step 2: Convert to fraction form
    21,709.12/29,932.32 = 18,346/x
  3. Step 3: Cross multiply
    21,709.12x = 29,932.32 × 18,346
  4. Step 4: Simplify right side
    21,709.12x = 549,138,342.72
  5. Step 5: Solve for x
    x = 549,138,342.72/21,709.12
  6. Step 6: Final answer
    x = 25,295.28

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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.