Home / 21,046.80-31,606.65-11,205.30

Finding the Fourth Proportional to 21,046.80, 31,606.65 and 11,205.30

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Solution

The fourth proportional to 21,046.80, 31,606.65 and 11,205.30 is: 16,827.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,046.80 : 31,606.65 = 11,205.30 : x
  2. Step 2: Convert to fraction form
    21,046.80/31,606.65 = 11,205.30/x
  3. Step 3: Cross multiply
    21,046.80x = 31,606.65 × 11,205.30
  4. Step 4: Simplify right side
    21,046.80x = 354,161,995.25
  5. Step 5: Solve for x
    x = 354,161,995.25/21,046.80
  6. Step 6: Final answer
    x = 16,827.36

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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.