Home / 19,478.40-26,882.67-12,769.68

Finding the Fourth Proportional to 19,478.40, 26,882.67 and 12,769.68

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Solution

The fourth proportional to 19,478.40, 26,882.67 and 12,769.68 is: 17,623.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,478.40 : 26,882.67 = 12,769.68 : x
  2. Step 2: Convert to fraction form
    19,478.40/26,882.67 = 12,769.68/x
  3. Step 3: Cross multiply
    19,478.40x = 26,882.67 × 12,769.68
  4. Step 4: Simplify right side
    19,478.40x = 343,283,093.45
  5. Step 5: Solve for x
    x = 343,283,093.45/19,478.40
  6. Step 6: Final answer
    x = 17,623.78

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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.