Home / 26,918.11-37,068.60-20,939.70

Finding the Fourth Proportional to 26,918.11, 37,068.60 and 20,939.70

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Solution

The fourth proportional to 26,918.11, 37,068.60 and 20,939.70 is: 28,835.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,918.11 : 37,068.60 = 20,939.70 : x
  2. Step 2: Convert to fraction form
    26,918.11/37,068.60 = 20,939.70/x
  3. Step 3: Cross multiply
    26,918.11x = 37,068.60 × 20,939.70
  4. Step 4: Simplify right side
    26,918.11x = 776,205,363.42
  5. Step 5: Solve for x
    x = 776,205,363.42/26,918.11
  6. Step 6: Final answer
    x = 28,835.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.