Home / 12,369.90-18,542.70-6,124.80

Finding the Fourth Proportional to 12,369.90, 18,542.70 and 6,124.80

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Solution

The fourth proportional to 12,369.90, 18,542.70 and 6,124.80 is: 9,181.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,369.90 : 18,542.70 = 6,124.80 : x
  2. Step 2: Convert to fraction form
    12,369.90/18,542.70 = 6,124.80/x
  3. Step 3: Cross multiply
    12,369.90x = 18,542.70 × 6,124.80
  4. Step 4: Simplify right side
    12,369.90x = 113,570,328.96
  5. Step 5: Solve for x
    x = 113,570,328.96/12,369.90
  6. Step 6: Final answer
    x = 9,181.18

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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.