Home / 12,456.48-18,678.58-5,433.46

Finding the Fourth Proportional to 12,456.48, 18,678.58 and 5,433.46

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Solution

The fourth proportional to 12,456.48, 18,678.58 and 5,433.46 is: 8,147.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456.48 : 18,678.58 = 5,433.46 : x
  2. Step 2: Convert to fraction form
    12,456.48/18,678.58 = 5,433.46/x
  3. Step 3: Cross multiply
    12,456.48x = 18,678.58 × 5,433.46
  4. Step 4: Simplify right side
    12,456.48x = 101,489,257.01
  5. Step 5: Solve for x
    x = 101,489,257.01/12,456.48
  6. Step 6: Final answer
    x = 8,147.50

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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.