Home / 21,392.73-29,519.46-12,438.81

Finding the Fourth Proportional to 21,392.73, 29,519.46 and 12,438.81

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Solution

The fourth proportional to 21,392.73, 29,519.46 and 12,438.81 is: 17,164.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,392.73 : 29,519.46 = 12,438.81 : x
  2. Step 2: Convert to fraction form
    21,392.73/29,519.46 = 12,438.81/x
  3. Step 3: Cross multiply
    21,392.73x = 29,519.46 × 12,438.81
  4. Step 4: Simplify right side
    21,392.73x = 367,186,954.24
  5. Step 5: Solve for x
    x = 367,186,954.24/21,392.73
  6. Step 6: Final answer
    x = 17,164.10

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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.