Home / 21,272.42-31,860.02-10,186.89

Finding the Fourth Proportional to 21,272.42, 31,860.02 and 10,186.89

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Solution

The fourth proportional to 21,272.42, 31,860.02 and 10,186.89 is: 15,257.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,272.42 : 31,860.02 = 10,186.89 : x
  2. Step 2: Convert to fraction form
    21,272.42/31,860.02 = 10,186.89/x
  3. Step 3: Cross multiply
    21,272.42x = 31,860.02 × 10,186.89
  4. Step 4: Simplify right side
    21,272.42x = 324,554,544.61
  5. Step 5: Solve for x
    x = 324,554,544.61/21,272.42
  6. Step 6: Final answer
    x = 15,257.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.