Home / 13,325.11-18,388.72-7,356.79

Finding the Fourth Proportional to 13,325.11, 18,388.72 and 7,356.79

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Solution

The fourth proportional to 13,325.11, 18,388.72 and 7,356.79 is: 10,152.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,325.11 : 18,388.72 = 7,356.79 : x
  2. Step 2: Convert to fraction form
    13,325.11/18,388.72 = 7,356.79/x
  3. Step 3: Cross multiply
    13,325.11x = 18,388.72 × 7,356.79
  4. Step 4: Simplify right side
    13,325.11x = 135,281,983.59
  5. Step 5: Solve for x
    x = 135,281,983.59/13,325.11
  6. Step 6: Final answer
    x = 10,152.41

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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.