Home / 13,325.28-18,388.08-7,356.78

Finding the Fourth Proportional to 13,325.28, 18,388.08 and 7,356.78

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Solution

The fourth proportional to 13,325.28, 18,388.08 and 7,356.78 is: 10,151.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,325.28 : 18,388.08 = 7,356.78 : x
  2. Step 2: Convert to fraction form
    13,325.28/18,388.08 = 7,356.78/x
  3. Step 3: Cross multiply
    13,325.28x = 18,388.08 × 7,356.78
  4. Step 4: Simplify right side
    13,325.28x = 135,277,059.18
  5. Step 5: Solve for x
    x = 135,277,059.18/13,325.28
  6. Step 6: Final answer
    x = 10,151.91

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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.