Home / 13,423.12-18,523.62-7,454.68

Finding the Fourth Proportional to 13,423.12, 18,523.62 and 7,454.68

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Solution

The fourth proportional to 13,423.12, 18,523.62 and 7,454.68 is: 10,287.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,423.12 : 18,523.62 = 7,454.68 : x
  2. Step 2: Convert to fraction form
    13,423.12/18,523.62 = 7,454.68/x
  3. Step 3: Cross multiply
    13,423.12x = 18,523.62 × 7,454.68
  4. Step 4: Simplify right side
    13,423.12x = 138,087,659.54
  5. Step 5: Solve for x
    x = 138,087,659.54/13,423.12
  6. Step 6: Final answer
    x = 10,287.30

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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.