Home / 12,212.84-16,861.28-9,374.78

Finding the Fourth Proportional to 12,212.84, 16,861.28 and 9,374.78

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Solution

The fourth proportional to 12,212.84, 16,861.28 and 9,374.78 is: 12,943.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212.84 : 16,861.28 = 9,374.78 : x
  2. Step 2: Convert to fraction form
    12,212.84/16,861.28 = 9,374.78/x
  3. Step 3: Cross multiply
    12,212.84x = 16,861.28 × 9,374.78
  4. Step 4: Simplify right side
    12,212.84x = 158,070,790.52
  5. Step 5: Solve for x
    x = 158,070,790.52/12,212.84
  6. Step 6: Final answer
    x = 12,943.00

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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.