Home / 27,628.80-38,130.48-15,692.88

Finding the Fourth Proportional to 27,628.80, 38,130.48 and 15,692.88

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Solution

The fourth proportional to 27,628.80, 38,130.48 and 15,692.88 is: 21,657.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,628.80 : 38,130.48 = 15,692.88 : x
  2. Step 2: Convert to fraction form
    27,628.80/38,130.48 = 15,692.88/x
  3. Step 3: Cross multiply
    27,628.80x = 38,130.48 × 15,692.88
  4. Step 4: Simplify right side
    27,628.80x = 598,377,046.98
  5. Step 5: Solve for x
    x = 598,377,046.98/27,628.80
  6. Step 6: Final answer
    x = 21,657.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.