Home / 31,692.96-47,539.38-12,981.72

Finding the Fourth Proportional to 31,692.96, 47,539.38 and 12,981.72

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Solution

The fourth proportional to 31,692.96, 47,539.38 and 12,981.72 is: 19,472.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,692.96 : 47,539.38 = 12,981.72 : x
  2. Step 2: Convert to fraction form
    31,692.96/47,539.38 = 12,981.72/x
  3. Step 3: Cross multiply
    31,692.96x = 47,539.38 × 12,981.72
  4. Step 4: Simplify right side
    31,692.96x = 617,142,920.13
  5. Step 5: Solve for x
    x = 617,142,920.13/31,692.96
  6. Step 6: Final answer
    x = 19,472.56

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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.