Home / 28,835.28-39,769.65-19,880.73

Finding the Fourth Proportional to 28,835.28, 39,769.65 and 19,880.73

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Solution

The fourth proportional to 28,835.28, 39,769.65 and 19,880.73 is: 27,419.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,835.28 : 39,769.65 = 19,880.73 : x
  2. Step 2: Convert to fraction form
    28,835.28/39,769.65 = 19,880.73/x
  3. Step 3: Cross multiply
    28,835.28x = 39,769.65 × 19,880.73
  4. Step 4: Simplify right side
    28,835.28x = 790,649,673.84
  5. Step 5: Solve for x
    x = 790,649,673.84/28,835.28
  6. Step 6: Final answer
    x = 27,419.52

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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.