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Finding the Fourth Proportional to 15,420.41, 23,125.84 and 5,558.41

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Solution

The fourth proportional to 15,420.41, 23,125.84 and 5,558.41 is: 8,335.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,420.41 : 23,125.84 = 5,558.41 : x
  2. Step 2: Convert to fraction form
    15,420.41/23,125.84 = 5,558.41/x
  3. Step 3: Cross multiply
    15,420.41x = 23,125.84 × 5,558.41
  4. Step 4: Simplify right side
    15,420.41x = 128,542,900.31
  5. Step 5: Solve for x
    x = 128,542,900.31/15,420.41
  6. Step 6: Final answer
    x = 8,335.89

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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.