Home / 20,692.40-31,056.56-10,838.56

Finding the Fourth Proportional to 20,692.40, 31,056.56 and 10,838.56

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Solution

The fourth proportional to 20,692.40, 31,056.56 and 10,838.56 is: 16,267.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,692.40 : 31,056.56 = 10,838.56 : x
  2. Step 2: Convert to fraction form
    20,692.40/31,056.56 = 10,838.56/x
  3. Step 3: Cross multiply
    20,692.40x = 31,056.56 × 10,838.56
  4. Step 4: Simplify right side
    20,692.40x = 336,608,388.95
  5. Step 5: Solve for x
    x = 336,608,388.95/20,692.40
  6. Step 6: Final answer
    x = 16,267.25

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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.