Home / 15,725.11-21,709.61-10,427.09

Finding the Fourth Proportional to 15,725.11, 21,709.61 and 10,427.09

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Solution

The fourth proportional to 15,725.11, 21,709.61 and 10,427.09 is: 14,395.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,725.11 : 21,709.61 = 10,427.09 : x
  2. Step 2: Convert to fraction form
    15,725.11/21,709.61 = 10,427.09/x
  3. Step 3: Cross multiply
    15,725.11x = 21,709.61 × 10,427.09
  4. Step 4: Simplify right side
    15,725.11x = 226,368,057.33
  5. Step 5: Solve for x
    x = 226,368,057.33/15,725.11
  6. Step 6: Final answer
    x = 14,395.32

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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.