Home / 13,357.22-18,432.68-7,388.72

Finding the Fourth Proportional to 13,357.22, 18,432.68 and 7,388.72

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Solution

The fourth proportional to 13,357.22, 18,432.68 and 7,388.72 is: 10,196.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,357.22 : 18,432.68 = 7,388.72 : x
  2. Step 2: Convert to fraction form
    13,357.22/18,432.68 = 7,388.72/x
  3. Step 3: Cross multiply
    13,357.22x = 18,432.68 × 7,388.72
  4. Step 4: Simplify right side
    13,357.22x = 136,193,911.37
  5. Step 5: Solve for x
    x = 136,193,911.37/13,357.22
  6. Step 6: Final answer
    x = 10,196.28

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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.