Home / 12,838.05-17,725.70-10,145.21

Finding the Fourth Proportional to 12,838.05, 17,725.70 and 10,145.21

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Solution

The fourth proportional to 12,838.05, 17,725.70 and 10,145.21 is: 14,007.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,838.05 : 17,725.70 = 10,145.21 : x
  2. Step 2: Convert to fraction form
    12,838.05/17,725.70 = 10,145.21/x
  3. Step 3: Cross multiply
    12,838.05x = 17,725.70 × 10,145.21
  4. Step 4: Simplify right side
    12,838.05x = 179,830,885.63
  5. Step 5: Solve for x
    x = 179,830,885.63/12,838.05
  6. Step 6: Final answer
    x = 14,007.65

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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.