Home / 12,455.59-18,670.40-5,433.72

Finding the Fourth Proportional to 12,455.59, 18,670.40 and 5,433.72

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Solution

The fourth proportional to 12,455.59, 18,670.40 and 5,433.72 is: 8,144.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455.59 : 18,670.40 = 5,433.72 : x
  2. Step 2: Convert to fraction form
    12,455.59/18,670.40 = 5,433.72/x
  3. Step 3: Cross multiply
    12,455.59x = 18,670.40 × 5,433.72
  4. Step 4: Simplify right side
    12,455.59x = 101,449,739.47
  5. Step 5: Solve for x
    x = 101,449,739.47/12,455.59
  6. Step 6: Final answer
    x = 8,144.92

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1.5x scale

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.