Home / 12,436.32-18,664.64-7,176.96

Finding the Fourth Proportional to 12,436.32, 18,664.64 and 7,176.96

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Solution

The fourth proportional to 12,436.32, 18,664.64 and 7,176.96 is: 10,771.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,436.32 : 18,664.64 = 7,176.96 : x
  2. Step 2: Convert to fraction form
    12,436.32/18,664.64 = 7,176.96/x
  3. Step 3: Cross multiply
    12,436.32x = 18,664.64 × 7,176.96
  4. Step 4: Simplify right side
    12,436.32x = 133,955,374.69
  5. Step 5: Solve for x
    x = 133,955,374.69/12,436.32
  6. Step 6: Final answer
    x = 10,771.30

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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.