Home / 28,419.18-42,629.58-8,697.30

Finding the Fourth Proportional to 28,419.18, 42,629.58 and 8,697.30

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Solution

The fourth proportional to 28,419.18, 42,629.58 and 8,697.30 is: 13,046.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,419.18 : 42,629.58 = 8,697.30 : x
  2. Step 2: Convert to fraction form
    28,419.18/42,629.58 = 8,697.30/x
  3. Step 3: Cross multiply
    28,419.18x = 42,629.58 × 8,697.30
  4. Step 4: Simplify right side
    28,419.18x = 370,762,246.13
  5. Step 5: Solve for x
    x = 370,762,246.13/28,419.18
  6. Step 6: Final answer
    x = 13,046.20

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Why These Related Problems?

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