Home / 26,111.60-39,167.40-19,890.80

Finding the Fourth Proportional to 26,111.60, 39,167.40 and 19,890.80

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Solution

The fourth proportional to 26,111.60, 39,167.40 and 19,890.80 is: 29,836.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,111.60 : 39,167.40 = 19,890.80 : x
  2. Step 2: Convert to fraction form
    26,111.60/39,167.40 = 19,890.80/x
  3. Step 3: Cross multiply
    26,111.60x = 39,167.40 × 19,890.80
  4. Step 4: Simplify right side
    26,111.60x = 779,070,919.92
  5. Step 5: Solve for x
    x = 779,070,919.92/26,111.60
  6. Step 6: Final answer
    x = 29,836.20

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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.