Home / 30,933.81-42,688.77-16,786.65

Finding the Fourth Proportional to 30,933.81, 42,688.77 and 16,786.65

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Solution

The fourth proportional to 30,933.81, 42,688.77 and 16,786.65 is: 23,165.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,933.81 : 42,688.77 = 16,786.65 : x
  2. Step 2: Convert to fraction form
    30,933.81/42,688.77 = 16,786.65/x
  3. Step 3: Cross multiply
    30,933.81x = 42,688.77 × 16,786.65
  4. Step 4: Simplify right side
    30,933.81x = 716,601,271.25
  5. Step 5: Solve for x
    x = 716,601,271.25/30,933.81
  6. Step 6: Final answer
    x = 23,165.63

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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.