Home / 13,865.09-19,133.69-7,817.27

Finding the Fourth Proportional to 13,865.09, 19,133.69 and 7,817.27

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Solution

The fourth proportional to 13,865.09, 19,133.69 and 7,817.27 is: 10,787.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,865.09 : 19,133.69 = 7,817.27 : x
  2. Step 2: Convert to fraction form
    13,865.09/19,133.69 = 7,817.27/x
  3. Step 3: Cross multiply
    13,865.09x = 19,133.69 × 7,817.27
  4. Step 4: Simplify right side
    13,865.09x = 149,573,144.70
  5. Step 5: Solve for x
    x = 149,573,144.70/13,865.09
  6. Step 6: Final answer
    x = 10,787.76

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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.