Home / 21,038.38-31,548.39-11,175.28

Finding the Fourth Proportional to 21,038.38, 31,548.39 and 11,175.28

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Solution

The fourth proportional to 21,038.38, 31,548.39 and 11,175.28 is: 16,758.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,038.38 : 31,548.39 = 11,175.28 : x
  2. Step 2: Convert to fraction form
    21,038.38/31,548.39 = 11,175.28/x
  3. Step 3: Cross multiply
    21,038.38x = 31,548.39 × 11,175.28
  4. Step 4: Simplify right side
    21,038.38x = 352,562,091.80
  5. Step 5: Solve for x
    x = 352,562,091.80/21,038.38
  6. Step 6: Final answer
    x = 16,758.04

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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.