Home / 12,374.09-18,561.99-4,978.58

Finding the Fourth Proportional to 12,374.09, 18,561.99 and 4,978.58

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Solution

The fourth proportional to 12,374.09, 18,561.99 and 4,978.58 is: 7,468.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,374.09 : 18,561.99 = 4,978.58 : x
  2. Step 2: Convert to fraction form
    12,374.09/18,561.99 = 4,978.58/x
  3. Step 3: Cross multiply
    12,374.09x = 18,561.99 × 4,978.58
  4. Step 4: Simplify right side
    12,374.09x = 92,412,259.36
  5. Step 5: Solve for x
    x = 92,412,259.36/12,374.09
  6. Step 6: Final answer
    x = 7,468.21

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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.