Home / 12,928.28-17,842.94-7,895.41

Finding the Fourth Proportional to 12,928.28, 17,842.94 and 7,895.41

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Solution

The fourth proportional to 12,928.28, 17,842.94 and 7,895.41 is: 10,896.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928.28 : 17,842.94 = 7,895.41 : x
  2. Step 2: Convert to fraction form
    12,928.28/17,842.94 = 7,895.41/x
  3. Step 3: Cross multiply
    12,928.28x = 17,842.94 × 7,895.41
  4. Step 4: Simplify right side
    12,928.28x = 140,877,302.04
  5. Step 5: Solve for x
    x = 140,877,302.04/12,928.28
  6. Step 6: Final answer
    x = 10,896.84

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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.