Home / 17,228.40-25,725.90-13,678.57

Finding the Fourth Proportional to 17,228.40, 25,725.90 and 13,678.57

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Solution

The fourth proportional to 17,228.40, 25,725.90 and 13,678.57 is: 20,425.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,228.40 : 25,725.90 = 13,678.57 : x
  2. Step 2: Convert to fraction form
    17,228.40/25,725.90 = 13,678.57/x
  3. Step 3: Cross multiply
    17,228.40x = 25,725.90 × 13,678.57
  4. Step 4: Simplify right side
    17,228.40x = 351,893,607.42
  5. Step 5: Solve for x
    x = 351,893,607.42/17,228.40
  6. Step 6: Final answer
    x = 20,425.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.