Home / 30,550.16-42,158.84-17,121.39

Finding the Fourth Proportional to 30,550.16, 42,158.84 and 17,121.39

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Solution

The fourth proportional to 30,550.16, 42,158.84 and 17,121.39 is: 23,627.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,550.16 : 42,158.84 = 17,121.39 : x
  2. Step 2: Convert to fraction form
    30,550.16/42,158.84 = 17,121.39/x
  3. Step 3: Cross multiply
    30,550.16x = 42,158.84 × 17,121.39
  4. Step 4: Simplify right side
    30,550.16x = 721,817,855.98
  5. Step 5: Solve for x
    x = 721,817,855.98/30,550.16
  6. Step 6: Final answer
    x = 23,627.31

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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.