Home / 13,405.68-20,110.32-5,088.78

Finding the Fourth Proportional to 13,405.68, 20,110.32 and 5,088.78

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Solution

The fourth proportional to 13,405.68, 20,110.32 and 5,088.78 is: 7,633.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,405.68 : 20,110.32 = 5,088.78 : x
  2. Step 2: Convert to fraction form
    13,405.68/20,110.32 = 5,088.78/x
  3. Step 3: Cross multiply
    13,405.68x = 20,110.32 × 5,088.78
  4. Step 4: Simplify right side
    13,405.68x = 102,336,994.21
  5. Step 5: Solve for x
    x = 102,336,994.21/13,405.68
  6. Step 6: Final answer
    x = 7,633.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.