Home / 13,325.20-18,388.79-7,356.87

Finding the Fourth Proportional to 13,325.20, 18,388.79 and 7,356.87

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Solution

The fourth proportional to 13,325.20, 18,388.79 and 7,356.87 is: 10,152.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,325.20 : 18,388.79 = 7,356.87 : x
  2. Step 2: Convert to fraction form
    13,325.20/18,388.79 = 7,356.87/x
  3. Step 3: Cross multiply
    13,325.20x = 18,388.79 × 7,356.87
  4. Step 4: Simplify right side
    13,325.20x = 135,283,880.02
  5. Step 5: Solve for x
    x = 135,283,880.02/13,325.20
  6. Step 6: Final answer
    x = 10,152.48

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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.