Home / 31,141.68-42,975.84-16,994.64

Finding the Fourth Proportional to 31,141.68, 42,975.84 and 16,994.64

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Solution

The fourth proportional to 31,141.68, 42,975.84 and 16,994.64 is: 23,452.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,141.68 : 42,975.84 = 16,994.64 : x
  2. Step 2: Convert to fraction form
    31,141.68/42,975.84 = 16,994.64/x
  3. Step 3: Cross multiply
    31,141.68x = 42,975.84 × 16,994.64
  4. Step 4: Simplify right side
    31,141.68x = 730,358,929.50
  5. Step 5: Solve for x
    x = 730,358,929.50/31,141.68
  6. Step 6: Final answer
    x = 23,452.78

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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.