Home / 12,280.10-18,416.51-4,487.09

Finding the Fourth Proportional to 12,280.10, 18,416.51 and 4,487.09

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Solution

The fourth proportional to 12,280.10, 18,416.51 and 4,487.09 is: 6,729.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,280.10 : 18,416.51 = 4,487.09 : x
  2. Step 2: Convert to fraction form
    12,280.10/18,416.51 = 4,487.09/x
  3. Step 3: Cross multiply
    12,280.10x = 18,416.51 × 4,487.09
  4. Step 4: Simplify right side
    12,280.10x = 82,636,515.42
  5. Step 5: Solve for x
    x = 82,636,515.42/12,280.10
  6. Step 6: Final answer
    x = 6,729.30

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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.