Home / 26,579.40-39,869.10-8,111.40

Finding the Fourth Proportional to 26,579.40, 39,869.10 and 8,111.40

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Solution

The fourth proportional to 26,579.40, 39,869.10 and 8,111.40 is: 12,167.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,579.40 : 39,869.10 = 8,111.40 : x
  2. Step 2: Convert to fraction form
    26,579.40/39,869.10 = 8,111.40/x
  3. Step 3: Cross multiply
    26,579.40x = 39,869.10 × 8,111.40
  4. Step 4: Simplify right side
    26,579.40x = 323,394,217.74
  5. Step 5: Solve for x
    x = 323,394,217.74/26,579.40
  6. Step 6: Final answer
    x = 12,167.10

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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.