Home / 21,172.47-29,219.18-11,740.83

Finding the Fourth Proportional to 21,172.47, 29,219.18 and 11,740.83

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Solution

The fourth proportional to 21,172.47, 29,219.18 and 11,740.83 is: 16,202.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,172.47 : 29,219.18 = 11,740.83 : x
  2. Step 2: Convert to fraction form
    21,172.47/29,219.18 = 11,740.83/x
  3. Step 3: Cross multiply
    21,172.47x = 29,219.18 × 11,740.83
  4. Step 4: Simplify right side
    21,172.47x = 343,057,366.42
  5. Step 5: Solve for x
    x = 343,057,366.42/21,172.47
  6. Step 6: Final answer
    x = 16,202.99

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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.