Home / 30,872.12-42,603.44-16,725.20

Finding the Fourth Proportional to 30,872.12, 42,603.44 and 16,725.20

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Solution

The fourth proportional to 30,872.12, 42,603.44 and 16,725.20 is: 23,080.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,872.12 : 42,603.44 = 16,725.20 : x
  2. Step 2: Convert to fraction form
    30,872.12/42,603.44 = 16,725.20/x
  3. Step 3: Cross multiply
    30,872.12x = 42,603.44 × 16,725.20
  4. Step 4: Simplify right side
    30,872.12x = 712,551,054.69
  5. Step 5: Solve for x
    x = 712,551,054.69/30,872.12
  6. Step 6: Final answer
    x = 23,080.73

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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.