Home / 13,132.77-18,119.99-8,423.43

Finding the Fourth Proportional to 13,132.77, 18,119.99 and 8,423.43

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Solution

The fourth proportional to 13,132.77, 18,119.99 and 8,423.43 is: 11,622.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,132.77 : 18,119.99 = 8,423.43 : x
  2. Step 2: Convert to fraction form
    13,132.77/18,119.99 = 8,423.43/x
  3. Step 3: Cross multiply
    13,132.77x = 18,119.99 × 8,423.43
  4. Step 4: Simplify right side
    13,132.77x = 152,632,488.42
  5. Step 5: Solve for x
    x = 152,632,488.42/13,132.77
  6. Step 6: Final answer
    x = 11,622.26

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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.