Home / 30,919.40-42,661.68-17,487.74

Finding the Fourth Proportional to 30,919.40, 42,661.68 and 17,487.74

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Solution

The fourth proportional to 30,919.40, 42,661.68 and 17,487.74 is: 24,129.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,919.40 : 42,661.68 = 17,487.74 : x
  2. Step 2: Convert to fraction form
    30,919.40/42,661.68 = 17,487.74/x
  3. Step 3: Cross multiply
    30,919.40x = 42,661.68 × 17,487.74
  4. Step 4: Simplify right side
    30,919.40x = 746,056,367.80
  5. Step 5: Solve for x
    x = 746,056,367.80/30,919.40
  6. Step 6: Final answer
    x = 24,129.07

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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.