Home / 13,345.52-18,416.46-7,376.78

Finding the Fourth Proportional to 13,345.52, 18,416.46 and 7,376.78

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Solution

The fourth proportional to 13,345.52, 18,416.46 and 7,376.78 is: 10,179.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,345.52 : 18,416.46 = 7,376.78 : x
  2. Step 2: Convert to fraction form
    13,345.52/18,416.46 = 7,376.78/x
  3. Step 3: Cross multiply
    13,345.52x = 18,416.46 × 7,376.78
  4. Step 4: Simplify right side
    13,345.52x = 135,854,173.80
  5. Step 5: Solve for x
    x = 135,854,173.80/13,345.52
  6. Step 6: Final answer
    x = 10,179.76

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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.