Home / 30,933.87-42,688.86-16,786.71

Finding the Fourth Proportional to 30,933.87, 42,688.86 and 16,786.71

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Solution

The fourth proportional to 30,933.87, 42,688.86 and 16,786.71 is: 23,165.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,933.87 : 42,688.86 = 16,786.71 : x
  2. Step 2: Convert to fraction form
    30,933.87/42,688.86 = 16,786.71/x
  3. Step 3: Cross multiply
    30,933.87x = 42,688.86 × 16,786.71
  4. Step 4: Simplify right side
    30,933.87x = 716,605,513.05
  5. Step 5: Solve for x
    x = 716,605,513.05/30,933.87
  6. Step 6: Final answer
    x = 23,165.72

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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.