Home / 12,318.90-18,482.30-4,416.09

Finding the Fourth Proportional to 12,318.90, 18,482.30 and 4,416.09

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Solution

The fourth proportional to 12,318.90, 18,482.30 and 4,416.09 is: 6,625.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,318.90 : 18,482.30 = 4,416.09 : x
  2. Step 2: Convert to fraction form
    12,318.90/18,482.30 = 4,416.09/x
  3. Step 3: Cross multiply
    12,318.90x = 18,482.30 × 4,416.09
  4. Step 4: Simplify right side
    12,318.90x = 81,619,478.13
  5. Step 5: Solve for x
    x = 81,619,478.13/12,318.90
  6. Step 6: Final answer
    x = 6,625.55

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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.