Home / 13,207.22-18,225.96-7,239.12

Finding the Fourth Proportional to 13,207.22, 18,225.96 and 7,239.12

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Solution

The fourth proportional to 13,207.22, 18,225.96 and 7,239.12 is: 9,989.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,207.22 : 18,225.96 = 7,239.12 : x
  2. Step 2: Convert to fraction form
    13,207.22/18,225.96 = 7,239.12/x
  3. Step 3: Cross multiply
    13,207.22x = 18,225.96 × 7,239.12
  4. Step 4: Simplify right side
    13,207.22x = 131,939,911.56
  5. Step 5: Solve for x
    x = 131,939,911.56/13,207.22
  6. Step 6: Final answer
    x = 9,989.98

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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.