Home / 13,351.13-18,423.64-7,382.75

Finding the Fourth Proportional to 13,351.13, 18,423.64 and 7,382.75

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Solution

The fourth proportional to 13,351.13, 18,423.64 and 7,382.75 is: 10,187.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,351.13 : 18,423.64 = 7,382.75 : x
  2. Step 2: Convert to fraction form
    13,351.13/18,423.64 = 7,382.75/x
  3. Step 3: Cross multiply
    13,351.13x = 18,423.64 × 7,382.75
  4. Step 4: Simplify right side
    13,351.13x = 136,017,128.21
  5. Step 5: Solve for x
    x = 136,017,128.21/13,351.13
  6. Step 6: Final answer
    x = 10,187.69

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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.