Home / 12,428.34-18,654.20-6,509.48

Finding the Fourth Proportional to 12,428.34, 18,654.20 and 6,509.48

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Solution

The fourth proportional to 12,428.34, 18,654.20 and 6,509.48 is: 9,770.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,428.34 : 18,654.20 = 6,509.48 : x
  2. Step 2: Convert to fraction form
    12,428.34/18,654.20 = 6,509.48/x
  3. Step 3: Cross multiply
    12,428.34x = 18,654.20 × 6,509.48
  4. Step 4: Simplify right side
    12,428.34x = 121,429,016.00
  5. Step 5: Solve for x
    x = 121,429,016.00/12,428.34
  6. Step 6: Final answer
    x = 9,770.33

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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.