Home / 12,345.76-18,502.08-7,960.96

Finding the Fourth Proportional to 12,345.76, 18,502.08 and 7,960.96

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Solution

The fourth proportional to 12,345.76, 18,502.08 and 7,960.96 is: 11,930.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,345.76 : 18,502.08 = 7,960.96 : x
  2. Step 2: Convert to fraction form
    12,345.76/18,502.08 = 7,960.96/x
  3. Step 3: Cross multiply
    12,345.76x = 18,502.08 × 7,960.96
  4. Step 4: Simplify right side
    12,345.76x = 147,294,318.80
  5. Step 5: Solve for x
    x = 147,294,318.80/12,345.76
  6. Step 6: Final answer
    x = 11,930.76

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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.