Home / 30,902.48-42,645.12-16,755.08

Finding the Fourth Proportional to 30,902.48, 42,645.12 and 16,755.08

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Solution

The fourth proportional to 30,902.48, 42,645.12 and 16,755.08 is: 23,121.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,902.48 : 42,645.12 = 16,755.08 : x
  2. Step 2: Convert to fraction form
    30,902.48/42,645.12 = 16,755.08/x
  3. Step 3: Cross multiply
    30,902.48x = 42,645.12 × 16,755.08
  4. Step 4: Simplify right side
    30,902.48x = 714,522,397.21
  5. Step 5: Solve for x
    x = 714,522,397.21/30,902.48
  6. Step 6: Final answer
    x = 23,121.85

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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.