Home / 12,127.32-16,738.92-7,091.28

Finding the Fourth Proportional to 12,127.32, 16,738.92 and 7,091.28

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Solution

The fourth proportional to 12,127.32, 16,738.92 and 7,091.28 is: 9,787.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127.32 : 16,738.92 = 7,091.28 : x
  2. Step 2: Convert to fraction form
    12,127.32/16,738.92 = 7,091.28/x
  3. Step 3: Cross multiply
    12,127.32x = 16,738.92 × 7,091.28
  4. Step 4: Simplify right side
    12,127.32x = 118,700,368.62
  5. Step 5: Solve for x
    x = 118,700,368.62/12,127.32
  6. Step 6: Final answer
    x = 9,787.85

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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.