Home / 21,769.73-30,045.51-13,276.78

Finding the Fourth Proportional to 21,769.73, 30,045.51 and 13,276.78

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Solution

The fourth proportional to 21,769.73, 30,045.51 and 13,276.78 is: 18,323.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,769.73 : 30,045.51 = 13,276.78 : x
  2. Step 2: Convert to fraction form
    21,769.73/30,045.51 = 13,276.78/x
  3. Step 3: Cross multiply
    21,769.73x = 30,045.51 × 13,276.78
  4. Step 4: Simplify right side
    21,769.73x = 398,907,626.26
  5. Step 5: Solve for x
    x = 398,907,626.26/21,769.73
  6. Step 6: Final answer
    x = 18,323.96

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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.