Home / 13,907.18-19,192.29-7,939.82

Finding the Fourth Proportional to 13,907.18, 19,192.29 and 7,939.82

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Solution

The fourth proportional to 13,907.18, 19,192.29 and 7,939.82 is: 10,957.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,907.18 : 19,192.29 = 7,939.82 : x
  2. Step 2: Convert to fraction form
    13,907.18/19,192.29 = 7,939.82/x
  3. Step 3: Cross multiply
    13,907.18x = 19,192.29 × 7,939.82
  4. Step 4: Simplify right side
    13,907.18x = 152,383,327.99
  5. Step 5: Solve for x
    x = 152,383,327.99/13,907.18
  6. Step 6: Final answer
    x = 10,957.17

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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.