Home / 20,517.76-30,752.34-9,415.09

Finding the Fourth Proportional to 20,517.76, 30,752.34 and 9,415.09

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Solution

The fourth proportional to 20,517.76, 30,752.34 and 9,415.09 is: 14,111.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,517.76 : 30,752.34 = 9,415.09 : x
  2. Step 2: Convert to fraction form
    20,517.76/30,752.34 = 9,415.09/x
  3. Step 3: Cross multiply
    20,517.76x = 30,752.34 × 9,415.09
  4. Step 4: Simplify right side
    20,517.76x = 289,536,048.81
  5. Step 5: Solve for x
    x = 289,536,048.81/20,517.76
  6. Step 6: Final answer
    x = 14,111.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.