Home / 21,140-29,172.96-12,184.24

Finding the Fourth Proportional to 21,140, 29,172.96 and 12,184.24

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Solution

The fourth proportional to 21,140, 29,172.96 and 12,184.24 is: 16,814.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,140 : 29,172.96 = 12,184.24 : x
  2. Step 2: Convert to fraction form
    21,140/29,172.96 = 12,184.24/x
  3. Step 3: Cross multiply
    21,140x = 29,172.96 × 12,184.24
  4. Step 4: Simplify right side
    21,140x = 355,450,346.15
  5. Step 5: Solve for x
    x = 355,450,346.15/21,140
  6. Step 6: Final answer
    x = 16,814.11

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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.