Home / 13,316.22-18,375.89-7,347.78

Finding the Fourth Proportional to 13,316.22, 18,375.89 and 7,347.78

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Solution

The fourth proportional to 13,316.22, 18,375.89 and 7,347.78 is: 10,139.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,316.22 : 18,375.89 = 7,347.78 : x
  2. Step 2: Convert to fraction form
    13,316.22/18,375.89 = 7,347.78/x
  3. Step 3: Cross multiply
    13,316.22x = 18,375.89 × 7,347.78
  4. Step 4: Simplify right side
    13,316.22x = 135,021,960.29
  5. Step 5: Solve for x
    x = 135,021,960.29/13,316.22
  6. Step 6: Final answer
    x = 10,139.66

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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.