Home / 21,409.37-29,554.85-12,453.61

Finding the Fourth Proportional to 21,409.37, 29,554.85 and 12,453.61

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Solution

The fourth proportional to 21,409.37, 29,554.85 and 12,453.61 is: 17,191.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,409.37 : 29,554.85 = 12,453.61 : x
  2. Step 2: Convert to fraction form
    21,409.37/29,554.85 = 12,453.61/x
  3. Step 3: Cross multiply
    21,409.37x = 29,554.85 × 12,453.61
  4. Step 4: Simplify right side
    21,409.37x = 368,064,575.51
  5. Step 5: Solve for x
    x = 368,064,575.51/21,409.37
  6. Step 6: Final answer
    x = 17,191.75

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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.