Home / 21,172.77-29,224.89-12,226.14

Finding the Fourth Proportional to 21,172.77, 29,224.89 and 12,226.14

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Solution

The fourth proportional to 21,172.77, 29,224.89 and 12,226.14 is: 16,875.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,172.77 : 29,224.89 = 12,226.14 : x
  2. Step 2: Convert to fraction form
    21,172.77/29,224.89 = 12,226.14/x
  3. Step 3: Cross multiply
    21,172.77x = 29,224.89 × 12,226.14
  4. Step 4: Simplify right side
    21,172.77x = 357,307,596.62
  5. Step 5: Solve for x
    x = 357,307,596.62/21,172.77
  6. Step 6: Final answer
    x = 16,875.81

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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.