Home / 12,278.79-16,945.61-6,974.00

Finding the Fourth Proportional to 12,278.79, 16,945.61 and 6,974.00

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Solution

The fourth proportional to 12,278.79, 16,945.61 and 6,974.00 is: 9,624.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,278.79 : 16,945.61 = 6,974.00 : x
  2. Step 2: Convert to fraction form
    12,278.79/16,945.61 = 6,974.00/x
  3. Step 3: Cross multiply
    12,278.79x = 16,945.61 × 6,974.00
  4. Step 4: Simplify right side
    12,278.79x = 118,178,628.09
  5. Step 5: Solve for x
    x = 118,178,628.09/12,278.79
  6. Step 6: Final answer
    x = 9,624.62

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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.