Home / 30,965.94-42,733.21-16,818.78

Finding the Fourth Proportional to 30,965.94, 42,733.21 and 16,818.78

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Solution

The fourth proportional to 30,965.94, 42,733.21 and 16,818.78 is: 23,210.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,965.94 : 42,733.21 = 16,818.78 : x
  2. Step 2: Convert to fraction form
    30,965.94/42,733.21 = 16,818.78/x
  3. Step 3: Cross multiply
    30,965.94x = 42,733.21 × 16,818.78
  4. Step 4: Simplify right side
    30,965.94x = 718,720,457.68
  5. Step 5: Solve for x
    x = 718,720,457.68/30,965.94
  6. Step 6: Final answer
    x = 23,210.03

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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.