Home / 13,380.04-18,464.78-7,330.87

Finding the Fourth Proportional to 13,380.04, 18,464.78 and 7,330.87

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Solution

The fourth proportional to 13,380.04, 18,464.78 and 7,330.87 is: 10,116.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,380.04 : 18,464.78 = 7,330.87 : x
  2. Step 2: Convert to fraction form
    13,380.04/18,464.78 = 7,330.87/x
  3. Step 3: Cross multiply
    13,380.04x = 18,464.78 × 7,330.87
  4. Step 4: Simplify right side
    13,380.04x = 135,362,901.76
  5. Step 5: Solve for x
    x = 135,362,901.76/13,380.04
  6. Step 6: Final answer
    x = 10,116.78

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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.