Home / 12,188.20-16,818.49-6,810.20

Finding the Fourth Proportional to 12,188.20, 16,818.49 and 6,810.20

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Solution

The fourth proportional to 12,188.20, 16,818.49 and 6,810.20 is: 9,397.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,188.20 : 16,818.49 = 6,810.20 : x
  2. Step 2: Convert to fraction form
    12,188.20/16,818.49 = 6,810.20/x
  3. Step 3: Cross multiply
    12,188.20x = 16,818.49 × 6,810.20
  4. Step 4: Simplify right side
    12,188.20x = 114,537,280.60
  5. Step 5: Solve for x
    x = 114,537,280.60/12,188.20
  6. Step 6: Final answer
    x = 9,397.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.