Home / 13,145.19-19,670.64-12,265.38

Finding the Fourth Proportional to 13,145.19, 19,670.64 and 12,265.38

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Solution

The fourth proportional to 13,145.19, 19,670.64 and 12,265.38 is: 18,354.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,145.19 : 19,670.64 = 12,265.38 : x
  2. Step 2: Convert to fraction form
    13,145.19/19,670.64 = 12,265.38/x
  3. Step 3: Cross multiply
    13,145.19x = 19,670.64 × 12,265.38
  4. Step 4: Simplify right side
    13,145.19x = 241,267,874.44
  5. Step 5: Solve for x
    x = 241,267,874.44/13,145.19
  6. Step 6: Final answer
    x = 18,354.08

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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.