Home / 12,864.80-19,281.82-7,310.50

Finding the Fourth Proportional to 12,864.80, 19,281.82 and 7,310.50

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Solution

The fourth proportional to 12,864.80, 19,281.82 and 7,310.50 is: 10,957.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,864.80 : 19,281.82 = 7,310.50 : x
  2. Step 2: Convert to fraction form
    12,864.80/19,281.82 = 7,310.50/x
  3. Step 3: Cross multiply
    12,864.80x = 19,281.82 × 7,310.50
  4. Step 4: Simplify right side
    12,864.80x = 140,959,821.36
  5. Step 5: Solve for x
    x = 140,959,821.36/12,864.80
  6. Step 6: Final answer
    x = 10,957.02

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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.