Home / 21,660.66-32,490.99-13,918.68

Finding the Fourth Proportional to 21,660.66, 32,490.99 and 13,918.68

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Solution

The fourth proportional to 21,660.66, 32,490.99 and 13,918.68 is: 20,878.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,660.66 : 32,490.99 = 13,918.68 : x
  2. Step 2: Convert to fraction form
    21,660.66/32,490.99 = 13,918.68/x
  3. Step 3: Cross multiply
    21,660.66x = 32,490.99 × 13,918.68
  4. Step 4: Simplify right side
    21,660.66x = 452,231,692.69
  5. Step 5: Solve for x
    x = 452,231,692.69/21,660.66
  6. Step 6: Final answer
    x = 20,878.02

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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.