Home / 13,172.59-18,174.66-8,070.82

Finding the Fourth Proportional to 13,172.59, 18,174.66 and 8,070.82

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Solution

The fourth proportional to 13,172.59, 18,174.66 and 8,070.82 is: 11,135.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,172.59 : 18,174.66 = 8,070.82 : x
  2. Step 2: Convert to fraction form
    13,172.59/18,174.66 = 8,070.82/x
  3. Step 3: Cross multiply
    13,172.59x = 18,174.66 × 8,070.82
  4. Step 4: Simplify right side
    13,172.59x = 146,684,409.42
  5. Step 5: Solve for x
    x = 146,684,409.42/13,172.59
  6. Step 6: Final answer
    x = 11,135.58

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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.