Home / 20,354.48-28,089.41-11,738.64

Finding the Fourth Proportional to 20,354.48, 28,089.41 and 11,738.64

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Solution

The fourth proportional to 20,354.48, 28,089.41 and 11,738.64 is: 16,199.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,354.48 : 28,089.41 = 11,738.64 : x
  2. Step 2: Convert to fraction form
    20,354.48/28,089.41 = 11,738.64/x
  3. Step 3: Cross multiply
    20,354.48x = 28,089.41 × 11,738.64
  4. Step 4: Simplify right side
    20,354.48x = 329,731,471.80
  5. Step 5: Solve for x
    x = 329,731,471.80/20,354.48
  6. Step 6: Final answer
    x = 16,199.45

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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.