Home / 11,928.80-16,463.45-7,148.95

Finding the Fourth Proportional to 11,928.80, 16,463.45 and 7,148.95

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Solution

The fourth proportional to 11,928.80, 16,463.45 and 7,148.95 is: 9,866.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,928.80 : 16,463.45 = 7,148.95 : x
  2. Step 2: Convert to fraction form
    11,928.80/16,463.45 = 7,148.95/x
  3. Step 3: Cross multiply
    11,928.80x = 16,463.45 × 7,148.95
  4. Step 4: Simplify right side
    11,928.80x = 117,696,380.88
  5. Step 5: Solve for x
    x = 117,696,380.88/11,928.80
  6. Step 6: Final answer
    x = 9,866.57

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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.