Home / 30,645.90-42,288.75-17,216.10

Finding the Fourth Proportional to 30,645.90, 42,288.75 and 17,216.10

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Solution

The fourth proportional to 30,645.90, 42,288.75 and 17,216.10 is: 23,756.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,645.90 : 42,288.75 = 17,216.10 : x
  2. Step 2: Convert to fraction form
    30,645.90/42,288.75 = 17,216.10/x
  3. Step 3: Cross multiply
    30,645.90x = 42,288.75 × 17,216.10
  4. Step 4: Simplify right side
    30,645.90x = 728,047,348.88
  5. Step 5: Solve for x
    x = 728,047,348.88/30,645.90
  6. Step 6: Final answer
    x = 23,756.76

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.