Home / 12,864.34-19,294.55-3,505.09

Finding the Fourth Proportional to 12,864.34, 19,294.55 and 3,505.09

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Solution

The fourth proportional to 12,864.34, 19,294.55 and 3,505.09 is: 5,257.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,864.34 : 19,294.55 = 3,505.09 : x
  2. Step 2: Convert to fraction form
    12,864.34/19,294.55 = 3,505.09/x
  3. Step 3: Cross multiply
    12,864.34x = 19,294.55 × 3,505.09
  4. Step 4: Simplify right side
    12,864.34x = 67,629,154.00
  5. Step 5: Solve for x
    x = 67,629,154.00/12,864.34
  6. Step 6: Final answer
    x = 5,257.10

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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.