Home / 31,442.94-47,178.36-12,736.35

Finding the Fourth Proportional to 31,442.94, 47,178.36 and 12,736.35

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Solution

The fourth proportional to 31,442.94, 47,178.36 and 12,736.35 is: 19,110.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,442.94 : 47,178.36 = 12,736.35 : x
  2. Step 2: Convert to fraction form
    31,442.94/47,178.36 = 12,736.35/x
  3. Step 3: Cross multiply
    31,442.94x = 47,178.36 × 12,736.35
  4. Step 4: Simplify right side
    31,442.94x = 600,880,105.39
  5. Step 5: Solve for x
    x = 600,880,105.39/31,442.94
  6. Step 6: Final answer
    x = 19,110.18

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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.