Home / 30,155.30-45,237.08-10,428.56

Finding the Fourth Proportional to 30,155.30, 45,237.08 and 10,428.56

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Solution

The fourth proportional to 30,155.30, 45,237.08 and 10,428.56 is: 15,644.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,155.30 : 45,237.08 = 10,428.56 : x
  2. Step 2: Convert to fraction form
    30,155.30/45,237.08 = 10,428.56/x
  3. Step 3: Cross multiply
    30,155.30x = 45,237.08 × 10,428.56
  4. Step 4: Simplify right side
    30,155.30x = 471,757,603.00
  5. Step 5: Solve for x
    x = 471,757,603.00/30,155.30
  6. Step 6: Final answer
    x = 15,644.27

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.