Home / 12,864.40-19,285.80-6,708.40

Finding the Fourth Proportional to 12,864.40, 19,285.80 and 6,708.40

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Solution

The fourth proportional to 12,864.40, 19,285.80 and 6,708.40 is: 10,056.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,864.40 : 19,285.80 = 6,708.40 : x
  2. Step 2: Convert to fraction form
    12,864.40/19,285.80 = 6,708.40/x
  3. Step 3: Cross multiply
    12,864.40x = 19,285.80 × 6,708.40
  4. Step 4: Simplify right side
    12,864.40x = 129,376,860.72
  5. Step 5: Solve for x
    x = 129,376,860.72/12,864.40
  6. Step 6: Final answer
    x = 10,056.97

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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.