Home / 27,515.40-37,973.16-20,789.16

Finding the Fourth Proportional to 27,515.40, 37,973.16 and 20,789.16

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Solution

The fourth proportional to 27,515.40, 37,973.16 and 20,789.16 is: 28,690.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,515.40 : 37,973.16 = 20,789.16 : x
  2. Step 2: Convert to fraction form
    27,515.40/37,973.16 = 20,789.16/x
  3. Step 3: Cross multiply
    27,515.40x = 37,973.16 × 20,789.16
  4. Step 4: Simplify right side
    27,515.40x = 789,430,098.95
  5. Step 5: Solve for x
    x = 789,430,098.95/27,515.40
  6. Step 6: Final answer
    x = 28,690.48

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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.