Home / 13,718.82-18,932.10-7,431.21

Finding the Fourth Proportional to 13,718.82, 18,932.10 and 7,431.21

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Solution

The fourth proportional to 13,718.82, 18,932.10 and 7,431.21 is: 10,255.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,718.82 : 18,932.10 = 7,431.21 : x
  2. Step 2: Convert to fraction form
    13,718.82/18,932.10 = 7,431.21/x
  3. Step 3: Cross multiply
    13,718.82x = 18,932.10 × 7,431.21
  4. Step 4: Simplify right side
    13,718.82x = 140,688,410.84
  5. Step 5: Solve for x
    x = 140,688,410.84/13,718.82
  6. Step 6: Final answer
    x = 10,255.14

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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.