Home / 13,753.45-18,979.68-7,465.78

Finding the Fourth Proportional to 13,753.45, 18,979.68 and 7,465.78

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Solution

The fourth proportional to 13,753.45, 18,979.68 and 7,465.78 is: 10,302.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,753.45 : 18,979.68 = 7,465.78 : x
  2. Step 2: Convert to fraction form
    13,753.45/18,979.68 = 7,465.78/x
  3. Step 3: Cross multiply
    13,753.45x = 18,979.68 × 7,465.78
  4. Step 4: Simplify right side
    13,753.45x = 141,698,115.35
  5. Step 5: Solve for x
    x = 141,698,115.35/13,753.45
  6. Step 6: Final answer
    x = 10,302.73

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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.