Home / 21,142.14-31,725.36-9,453.84

Finding the Fourth Proportional to 21,142.14, 31,725.36 and 9,453.84

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Solution

The fourth proportional to 21,142.14, 31,725.36 and 9,453.84 is: 14,186.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,142.14 : 31,725.36 = 9,453.84 : x
  2. Step 2: Convert to fraction form
    21,142.14/31,725.36 = 9,453.84/x
  3. Step 3: Cross multiply
    21,142.14x = 31,725.36 × 9,453.84
  4. Step 4: Simplify right side
    21,142.14x = 299,926,477.38
  5. Step 5: Solve for x
    x = 299,926,477.38/21,142.14
  6. Step 6: Final answer
    x = 14,186.19

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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.