Home / 13,455.48-20,178.02-6,433.62

Finding the Fourth Proportional to 13,455.48, 20,178.02 and 6,433.62

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Solution

The fourth proportional to 13,455.48, 20,178.02 and 6,433.62 is: 9,647.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455.48 : 20,178.02 = 6,433.62 : x
  2. Step 2: Convert to fraction form
    13,455.48/20,178.02 = 6,433.62/x
  3. Step 3: Cross multiply
    13,455.48x = 20,178.02 × 6,433.62
  4. Step 4: Simplify right side
    13,455.48x = 129,817,629.32
  5. Step 5: Solve for x
    x = 129,817,629.32/13,455.48
  6. Step 6: Final answer
    x = 9,647.94

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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.