Home / 21,615.87-29,828.48-12,184.23

Finding the Fourth Proportional to 21,615.87, 29,828.48 and 12,184.23

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Solution

The fourth proportional to 21,615.87, 29,828.48 and 12,184.23 is: 16,813.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,615.87 : 29,828.48 = 12,184.23 : x
  2. Step 2: Convert to fraction form
    21,615.87/29,828.48 = 12,184.23/x
  3. Step 3: Cross multiply
    21,615.87x = 29,828.48 × 12,184.23
  4. Step 4: Simplify right side
    21,615.87x = 363,436,999.95
  5. Step 5: Solve for x
    x = 363,436,999.95/21,615.87
  6. Step 6: Final answer
    x = 16,813.43

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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.