Home / 30,645.11-42,304.73-20,453.01

Finding the Fourth Proportional to 30,645.11, 42,304.73 and 20,453.01

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Solution

The fourth proportional to 30,645.11, 42,304.73 and 20,453.01 is: 28,234.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,645.11 : 42,304.73 = 20,453.01 : x
  2. Step 2: Convert to fraction form
    30,645.11/42,304.73 = 20,453.01/x
  3. Step 3: Cross multiply
    30,645.11x = 42,304.73 × 20,453.01
  4. Step 4: Simplify right side
    30,645.11x = 865,258,963.47
  5. Step 5: Solve for x
    x = 865,258,963.47/30,645.11
  6. Step 6: Final answer
    x = 28,234.82

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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.