Home / 30,830.39-42,542.87-17,399.05

Finding the Fourth Proportional to 30,830.39, 42,542.87 and 17,399.05

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Solution

The fourth proportional to 30,830.39, 42,542.87 and 17,399.05 is: 24,008.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,830.39 : 42,542.87 = 17,399.05 : x
  2. Step 2: Convert to fraction form
    30,830.39/42,542.87 = 17,399.05/x
  3. Step 3: Cross multiply
    30,830.39x = 42,542.87 × 17,399.05
  4. Step 4: Simplify right side
    30,830.39x = 740,205,653.84
  5. Step 5: Solve for x
    x = 740,205,653.84/30,830.39
  6. Step 6: Final answer
    x = 24,008.96

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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.