Home / 17,640.60-26,439.30-7,769.40

Finding the Fourth Proportional to 17,640.60, 26,439.30 and 7,769.40

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Solution

The fourth proportional to 17,640.60, 26,439.30 and 7,769.40 is: 11,644.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,640.60 : 26,439.30 = 7,769.40 : x
  2. Step 2: Convert to fraction form
    17,640.60/26,439.30 = 7,769.40/x
  3. Step 3: Cross multiply
    17,640.60x = 26,439.30 × 7,769.40
  4. Step 4: Simplify right side
    17,640.60x = 205,417,497.42
  5. Step 5: Solve for x
    x = 205,417,497.42/17,640.60
  6. Step 6: Final answer
    x = 11,644.59

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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.