Home / 21,172.68-29,216.34-11,740.68

Finding the Fourth Proportional to 21,172.68, 29,216.34 and 11,740.68

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Solution

The fourth proportional to 21,172.68, 29,216.34 and 11,740.68 is: 16,201.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,172.68 : 29,216.34 = 11,740.68 : x
  2. Step 2: Convert to fraction form
    21,172.68/29,216.34 = 11,740.68/x
  3. Step 3: Cross multiply
    21,172.68x = 29,216.34 × 11,740.68
  4. Step 4: Simplify right side
    21,172.68x = 343,019,698.71
  5. Step 5: Solve for x
    x = 343,019,698.71/21,172.68
  6. Step 6: Final answer
    x = 16,201.05

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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.