Home / 31,583.31-47,374.82-12,858.90

Finding the Fourth Proportional to 31,583.31, 47,374.82 and 12,858.90

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Solution

The fourth proportional to 31,583.31, 47,374.82 and 12,858.90 is: 19,288.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,583.31 : 47,374.82 = 12,858.90 : x
  2. Step 2: Convert to fraction form
    31,583.31/47,374.82 = 12,858.90/x
  3. Step 3: Cross multiply
    31,583.31x = 47,374.82 × 12,858.90
  4. Step 4: Simplify right side
    31,583.31x = 609,188,072.90
  5. Step 5: Solve for x
    x = 609,188,072.90/31,583.31
  6. Step 6: Final answer
    x = 19,288.29

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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.