Home / 21,518.03-29,692.28-11,957.87

Finding the Fourth Proportional to 21,518.03, 29,692.28 and 11,957.87

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Solution

The fourth proportional to 21,518.03, 29,692.28 and 11,957.87 is: 16,500.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,518.03 : 29,692.28 = 11,957.87 : x
  2. Step 2: Convert to fraction form
    21,518.03/29,692.28 = 11,957.87/x
  3. Step 3: Cross multiply
    21,518.03x = 29,692.28 × 11,957.87
  4. Step 4: Simplify right side
    21,518.03x = 355,056,215.99
  5. Step 5: Solve for x
    x = 355,056,215.99/21,518.03
  6. Step 6: Final answer
    x = 16,500.41

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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.