Home / 21,998.42-30,357.02-13,040.63

Finding the Fourth Proportional to 21,998.42, 30,357.02 and 13,040.63

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Solution

The fourth proportional to 21,998.42, 30,357.02 and 13,040.63 is: 17,995.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,998.42 : 30,357.02 = 13,040.63 : x
  2. Step 2: Convert to fraction form
    21,998.42/30,357.02 = 13,040.63/x
  3. Step 3: Cross multiply
    21,998.42x = 30,357.02 × 13,040.63
  4. Step 4: Simplify right side
    21,998.42x = 395,874,448.73
  5. Step 5: Solve for x
    x = 395,874,448.73/21,998.42
  6. Step 6: Final answer
    x = 17,995.59

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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.