Home / 30,935.97-42,690.99-16,788.81

Finding the Fourth Proportional to 30,935.97, 42,690.99 and 16,788.81

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Solution

The fourth proportional to 30,935.97, 42,690.99 and 16,788.81 is: 23,168.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,935.97 : 42,690.99 = 16,788.81 : x
  2. Step 2: Convert to fraction form
    30,935.97/42,690.99 = 16,788.81/x
  3. Step 3: Cross multiply
    30,935.97x = 42,690.99 × 16,788.81
  4. Step 4: Simplify right side
    30,935.97x = 716,730,919.82
  5. Step 5: Solve for x
    x = 716,730,919.82/30,935.97
  6. Step 6: Final answer
    x = 23,168.21

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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.