Home / 20,692.88-31,039.80-5,903.12

Finding the Fourth Proportional to 20,692.88, 31,039.80 and 5,903.12

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Solution

The fourth proportional to 20,692.88, 31,039.80 and 5,903.12 is: 8,854.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,692.88 : 31,039.80 = 5,903.12 : x
  2. Step 2: Convert to fraction form
    20,692.88/31,039.80 = 5,903.12/x
  3. Step 3: Cross multiply
    20,692.88x = 31,039.80 × 5,903.12
  4. Step 4: Simplify right side
    20,692.88x = 183,231,664.18
  5. Step 5: Solve for x
    x = 183,231,664.18/20,692.88
  6. Step 6: Final answer
    x = 8,854.82

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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.