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Finding the Fourth Proportional to 22,559.76, 31,102.64 and 18,511.76

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Solution

The fourth proportional to 22,559.76, 31,102.64 and 18,511.76 is: 25,521.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,559.76 : 31,102.64 = 18,511.76 : x
  2. Step 2: Convert to fraction form
    22,559.76/31,102.64 = 18,511.76/x
  3. Step 3: Cross multiply
    22,559.76x = 31,102.64 × 18,511.76
  4. Step 4: Simplify right side
    22,559.76x = 575,764,607.05
  5. Step 5: Solve for x
    x = 575,764,607.05/22,559.76
  6. Step 6: Final answer
    x = 25,521.75

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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.