Home / 30,933.75-42,688.69-16,786.60

Finding the Fourth Proportional to 30,933.75, 42,688.69 and 16,786.60

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Solution

The fourth proportional to 30,933.75, 42,688.69 and 16,786.60 is: 23,165.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,933.75 : 42,688.69 = 16,786.60 : x
  2. Step 2: Convert to fraction form
    30,933.75/42,688.69 = 16,786.60/x
  3. Step 3: Cross multiply
    30,933.75x = 42,688.69 × 16,786.60
  4. Step 4: Simplify right side
    30,933.75x = 716,597,750.11
  5. Step 5: Solve for x
    x = 716,597,750.11/30,933.75
  6. Step 6: Final answer
    x = 23,165.57

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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.