Home / 12,963.49-19,428.82-8,281.69

Finding the Fourth Proportional to 12,963.49, 19,428.82 and 8,281.69

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Solution

The fourth proportional to 12,963.49, 19,428.82 and 8,281.69 is: 12,412.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,963.49 : 19,428.82 = 8,281.69 : x
  2. Step 2: Convert to fraction form
    12,963.49/19,428.82 = 8,281.69/x
  3. Step 3: Cross multiply
    12,963.49x = 19,428.82 × 8,281.69
  4. Step 4: Simplify right side
    12,963.49x = 160,903,464.31
  5. Step 5: Solve for x
    x = 160,903,464.31/12,963.49
  6. Step 6: Final answer
    x = 12,412.05

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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.