Home / 12,928.60-19,381.56-6,675.40

Finding the Fourth Proportional to 12,928.60, 19,381.56 and 6,675.40

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Solution

The fourth proportional to 12,928.60, 19,381.56 and 6,675.40 is: 10,007.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928.60 : 19,381.56 = 6,675.40 : x
  2. Step 2: Convert to fraction form
    12,928.60/19,381.56 = 6,675.40/x
  3. Step 3: Cross multiply
    12,928.60x = 19,381.56 × 6,675.40
  4. Step 4: Simplify right side
    12,928.60x = 129,379,665.62
  5. Step 5: Solve for x
    x = 129,379,665.62/12,928.60
  6. Step 6: Final answer
    x = 10,007.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.