Home / 12,178.96-16,806.90-6,875.50

Finding the Fourth Proportional to 12,178.96, 16,806.90 and 6,875.50

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Solution

The fourth proportional to 12,178.96, 16,806.90 and 6,875.50 is: 9,488.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,178.96 : 16,806.90 = 6,875.50 : x
  2. Step 2: Convert to fraction form
    12,178.96/16,806.90 = 6,875.50/x
  3. Step 3: Cross multiply
    12,178.96x = 16,806.90 × 6,875.50
  4. Step 4: Simplify right side
    12,178.96x = 115,555,840.95
  5. Step 5: Solve for x
    x = 115,555,840.95/12,178.96
  6. Step 6: Final answer
    x = 9,488.15

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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.