Home / 13,160.34-18,161.19-7,191.99

Finding the Fourth Proportional to 13,160.34, 18,161.19 and 7,191.99

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Solution

The fourth proportional to 13,160.34, 18,161.19 and 7,191.99 is: 9,924.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,160.34 : 18,161.19 = 7,191.99 : x
  2. Step 2: Convert to fraction form
    13,160.34/18,161.19 = 7,191.99/x
  3. Step 3: Cross multiply
    13,160.34x = 18,161.19 × 7,191.99
  4. Step 4: Simplify right side
    13,160.34x = 130,615,096.87
  5. Step 5: Solve for x
    x = 130,615,096.87/13,160.34
  6. Step 6: Final answer
    x = 9,924.90

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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.