Home / 13,327.39-18,377.99-11,445.20

Finding the Fourth Proportional to 13,327.39, 18,377.99 and 11,445.20

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Solution

The fourth proportional to 13,327.39, 18,377.99 and 11,445.20 is: 15,782.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,327.39 : 18,377.99 = 11,445.20 : x
  2. Step 2: Convert to fraction form
    13,327.39/18,377.99 = 11,445.20/x
  3. Step 3: Cross multiply
    13,327.39x = 18,377.99 × 11,445.20
  4. Step 4: Simplify right side
    13,327.39x = 210,339,733.87
  5. Step 5: Solve for x
    x = 210,339,733.87/13,327.39
  6. Step 6: Final answer
    x = 15,782.52

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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.