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Finding the Fourth Proportional to 20,554, 28,357.92 and 12,592.24

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Solution

The fourth proportional to 20,554, 28,357.92 and 12,592.24 is: 17,373.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,554 : 28,357.92 = 12,592.24 : x
  2. Step 2: Convert to fraction form
    20,554/28,357.92 = 12,592.24/x
  3. Step 3: Cross multiply
    20,554x = 28,357.92 × 12,592.24
  4. Step 4: Simplify right side
    20,554x = 357,089,734.54
  5. Step 5: Solve for x
    x = 357,089,734.54/20,554
  6. Step 6: Final answer
    x = 17,373.25

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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.