Home / 30,786.38-42,485.14-16,639.19

Finding the Fourth Proportional to 30,786.38, 42,485.14 and 16,639.19

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Solution

The fourth proportional to 30,786.38, 42,485.14 and 16,639.19 is: 22,962.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,786.38 : 42,485.14 = 16,639.19 : x
  2. Step 2: Convert to fraction form
    30,786.38/42,485.14 = 16,639.19/x
  3. Step 3: Cross multiply
    30,786.38x = 42,485.14 × 16,639.19
  4. Step 4: Simplify right side
    30,786.38x = 706,918,316.64
  5. Step 5: Solve for x
    x = 706,918,316.64/30,786.38
  6. Step 6: Final answer
    x = 22,962.05

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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.