Home / 30,765.81-42,451.65-17,150.88

Finding the Fourth Proportional to 30,765.81, 42,451.65 and 17,150.88

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Solution

The fourth proportional to 30,765.81, 42,451.65 and 17,150.88 is: 23,665.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,765.81 : 42,451.65 = 17,150.88 : x
  2. Step 2: Convert to fraction form
    30,765.81/42,451.65 = 17,150.88/x
  3. Step 3: Cross multiply
    30,765.81x = 42,451.65 × 17,150.88
  4. Step 4: Simplify right side
    30,765.81x = 728,083,154.95
  5. Step 5: Solve for x
    x = 728,083,154.95/30,765.81
  6. Step 6: Final answer
    x = 23,665.33

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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.