Home / 13,129.57-19,717.85-12,601.05

Finding the Fourth Proportional to 13,129.57, 19,717.85 and 12,601.05

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Solution

The fourth proportional to 13,129.57, 19,717.85 and 12,601.05 is: 18,924.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,129.57 : 19,717.85 = 12,601.05 : x
  2. Step 2: Convert to fraction form
    13,129.57/19,717.85 = 12,601.05/x
  3. Step 3: Cross multiply
    13,129.57x = 19,717.85 × 12,601.05
  4. Step 4: Simplify right side
    13,129.57x = 248,465,613.74
  5. Step 5: Solve for x
    x = 248,465,613.74/13,129.57
  6. Step 6: Final answer
    x = 18,924.12

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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.