Home / 40,639.23-60,960.89-12,939.39

Finding the Fourth Proportional to 40,639.23, 60,960.89 and 12,939.39

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Solution

The fourth proportional to 40,639.23, 60,960.89 and 12,939.39 is: 19,409.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,639.23 : 60,960.89 = 12,939.39 : x
  2. Step 2: Convert to fraction form
    40,639.23/60,960.89 = 12,939.39/x
  3. Step 3: Cross multiply
    40,639.23x = 60,960.89 × 12,939.39
  4. Step 4: Simplify right side
    40,639.23x = 788,796,665.76
  5. Step 5: Solve for x
    x = 788,796,665.76/40,639.23
  6. Step 6: Final answer
    x = 19,409.73

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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.