Home / 13,736.87-18,956.13-7,769.74

Finding the Fourth Proportional to 13,736.87, 18,956.13 and 7,769.74

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Solution

The fourth proportional to 13,736.87, 18,956.13 and 7,769.74 is: 10,721.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,736.87 : 18,956.13 = 7,769.74 : x
  2. Step 2: Convert to fraction form
    13,736.87/18,956.13 = 7,769.74/x
  3. Step 3: Cross multiply
    13,736.87x = 18,956.13 × 7,769.74
  4. Step 4: Simplify right side
    13,736.87x = 147,284,201.51
  5. Step 5: Solve for x
    x = 147,284,201.51/13,736.87
  6. Step 6: Final answer
    x = 10,721.82

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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.