Home / 27,164.60-37,488.70-20,438.18

Finding the Fourth Proportional to 27,164.60, 37,488.70 and 20,438.18

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Solution

The fourth proportional to 27,164.60, 37,488.70 and 20,438.18 is: 28,205.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,164.60 : 37,488.70 = 20,438.18 : x
  2. Step 2: Convert to fraction form
    27,164.60/37,488.70 = 20,438.18/x
  3. Step 3: Cross multiply
    27,164.60x = 37,488.70 × 20,438.18
  4. Step 4: Simplify right side
    27,164.60x = 766,200,798.57
  5. Step 5: Solve for x
    x = 766,200,798.57/27,164.60
  6. Step 6: Final answer
    x = 28,205.86

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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.