Home / 20,740.71-28,623.56-11,788.23

Finding the Fourth Proportional to 20,740.71, 28,623.56 and 11,788.23

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Solution

The fourth proportional to 20,740.71, 28,623.56 and 11,788.23 is: 16,268.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,740.71 : 28,623.56 = 11,788.23 : x
  2. Step 2: Convert to fraction form
    20,740.71/28,623.56 = 11,788.23/x
  3. Step 3: Cross multiply
    20,740.71x = 28,623.56 × 11,788.23
  4. Step 4: Simplify right side
    20,740.71x = 337,421,108.70
  5. Step 5: Solve for x
    x = 337,421,108.70/20,740.71
  6. Step 6: Final answer
    x = 16,268.54

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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.