Home / 13,719.63-18,936.20-7,754.76

Finding the Fourth Proportional to 13,719.63, 18,936.20 and 7,754.76

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Solution

The fourth proportional to 13,719.63, 18,936.20 and 7,754.76 is: 10,703.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.63 : 18,936.20 = 7,754.76 : x
  2. Step 2: Convert to fraction form
    13,719.63/18,936.20 = 7,754.76/x
  3. Step 3: Cross multiply
    13,719.63x = 18,936.20 × 7,754.76
  4. Step 4: Simplify right side
    13,719.63x = 146,845,647.54
  5. Step 5: Solve for x
    x = 146,845,647.54/13,719.63
  6. Step 6: Final answer
    x = 10,703.32

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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.