Home / 30,972.35-42,740.25-16,825.16

Finding the Fourth Proportional to 30,972.35, 42,740.25 and 16,825.16

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Solution

The fourth proportional to 30,972.35, 42,740.25 and 16,825.16 is: 23,217.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,972.35 : 42,740.25 = 16,825.16 : x
  2. Step 2: Convert to fraction form
    30,972.35/42,740.25 = 16,825.16/x
  3. Step 3: Cross multiply
    30,972.35x = 42,740.25 × 16,825.16
  4. Step 4: Simplify right side
    30,972.35x = 719,111,544.69
  5. Step 5: Solve for x
    x = 719,111,544.69/30,972.35
  6. Step 6: Final answer
    x = 23,217.86

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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.