Home / 12,246.88-18,378.50-4,455.70

Finding the Fourth Proportional to 12,246.88, 18,378.50 and 4,455.70

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Solution

The fourth proportional to 12,246.88, 18,378.50 and 4,455.70 is: 6,686.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,246.88 : 18,378.50 = 4,455.70 : x
  2. Step 2: Convert to fraction form
    12,246.88/18,378.50 = 4,455.70/x
  3. Step 3: Cross multiply
    12,246.88x = 18,378.50 × 4,455.70
  4. Step 4: Simplify right side
    12,246.88x = 81,888,968.28
  5. Step 5: Solve for x
    x = 81,888,968.28/12,246.88
  6. Step 6: Final answer
    x = 6,686.52

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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.