Home / 30,808.64-42,515.73-16,661.45

Finding the Fourth Proportional to 30,808.64, 42,515.73 and 16,661.45

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Solution

The fourth proportional to 30,808.64, 42,515.73 and 16,661.45 is: 22,992.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,808.64 : 42,515.73 = 16,661.45 : x
  2. Step 2: Convert to fraction form
    30,808.64/42,515.73 = 16,661.45/x
  3. Step 3: Cross multiply
    30,808.64x = 42,515.73 × 16,661.45
  4. Step 4: Simplify right side
    30,808.64x = 708,373,497.03
  5. Step 5: Solve for x
    x = 708,373,497.03/30,808.64
  6. Step 6: Final answer
    x = 22,992.69

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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.