Home / 12,631.69-18,947.58-12,327.22

Finding the Fourth Proportional to 12,631.69, 18,947.58 and 12,327.22

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Solution

The fourth proportional to 12,631.69, 18,947.58 and 12,327.22 is: 18,490.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,631.69 : 18,947.58 = 12,327.22 : x
  2. Step 2: Convert to fraction form
    12,631.69/18,947.58 = 12,327.22/x
  3. Step 3: Cross multiply
    12,631.69x = 18,947.58 × 12,327.22
  4. Step 4: Simplify right side
    12,631.69x = 233,570,987.13
  5. Step 5: Solve for x
    x = 233,570,987.13/12,631.69
  6. Step 6: Final answer
    x = 18,490.87

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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.