Home / 31,580.82-47,364.30-12,855.96

Finding the Fourth Proportional to 31,580.82, 47,364.30 and 12,855.96

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Solution

The fourth proportional to 31,580.82, 47,364.30 and 12,855.96 is: 19,281.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,580.82 : 47,364.30 = 12,855.96 : x
  2. Step 2: Convert to fraction form
    31,580.82/47,364.30 = 12,855.96/x
  3. Step 3: Cross multiply
    31,580.82x = 47,364.30 × 12,855.96
  4. Step 4: Simplify right side
    31,580.82x = 608,913,546.23
  5. Step 5: Solve for x
    x = 608,913,546.23/31,580.82
  6. Step 6: Final answer
    x = 19,281.12

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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.