Home / 12,977.76-17,907.84-7,943.16

Finding the Fourth Proportional to 12,977.76, 17,907.84 and 7,943.16

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Solution

The fourth proportional to 12,977.76, 17,907.84 and 7,943.16 is: 10,960.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,977.76 : 17,907.84 = 7,943.16 : x
  2. Step 2: Convert to fraction form
    12,977.76/17,907.84 = 7,943.16/x
  3. Step 3: Cross multiply
    12,977.76x = 17,907.84 × 7,943.16
  4. Step 4: Simplify right side
    12,977.76x = 142,244,838.37
  5. Step 5: Solve for x
    x = 142,244,838.37/12,977.76
  6. Step 6: Final answer
    x = 10,960.66

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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.