Home / 21,167.10-31,730.85-8,028.30

Finding the Fourth Proportional to 21,167.10, 31,730.85 and 8,028.30

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Solution

The fourth proportional to 21,167.10, 31,730.85 and 8,028.30 is: 12,034.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167.10 : 31,730.85 = 8,028.30 : x
  2. Step 2: Convert to fraction form
    21,167.10/31,730.85 = 8,028.30/x
  3. Step 3: Cross multiply
    21,167.10x = 31,730.85 × 8,028.30
  4. Step 4: Simplify right side
    21,167.10x = 254,744,783.06
  5. Step 5: Solve for x
    x = 254,744,783.06/21,167.10
  6. Step 6: Final answer
    x = 12,034.94

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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.