Home / 13,174.55-19,718.85-7,161.58

Finding the Fourth Proportional to 13,174.55, 19,718.85 and 7,161.58

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Solution

The fourth proportional to 13,174.55, 19,718.85 and 7,161.58 is: 10,719.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,174.55 : 19,718.85 = 7,161.58 : x
  2. Step 2: Convert to fraction form
    13,174.55/19,718.85 = 7,161.58/x
  3. Step 3: Cross multiply
    13,174.55x = 19,718.85 × 7,161.58
  4. Step 4: Simplify right side
    13,174.55x = 141,218,023.19
  5. Step 5: Solve for x
    x = 141,218,023.19/13,174.55
  6. Step 6: Final answer
    x = 10,719.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.