Home / 30,629.39-42,273.14-18,699.66

Finding the Fourth Proportional to 30,629.39, 42,273.14 and 18,699.66

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Solution

The fourth proportional to 30,629.39, 42,273.14 and 18,699.66 is: 25,808.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,629.39 : 42,273.14 = 18,699.66 : x
  2. Step 2: Convert to fraction form
    30,629.39/42,273.14 = 18,699.66/x
  3. Step 3: Cross multiply
    30,629.39x = 42,273.14 × 18,699.66
  4. Step 4: Simplify right side
    30,629.39x = 790,493,251.63
  5. Step 5: Solve for x
    x = 790,493,251.63/30,629.39
  6. Step 6: Final answer
    x = 25,808.32

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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.