Home / 10,389.28-15,583.36-3,369.64

Finding the Fourth Proportional to 10,389.28, 15,583.36 and 3,369.64

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Solution

The fourth proportional to 10,389.28, 15,583.36 and 3,369.64 is: 5,054.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,389.28 : 15,583.36 = 3,369.64 : x
  2. Step 2: Convert to fraction form
    10,389.28/15,583.36 = 3,369.64/x
  3. Step 3: Cross multiply
    10,389.28x = 15,583.36 × 3,369.64
  4. Step 4: Simplify right side
    10,389.28x = 52,510,313.19
  5. Step 5: Solve for x
    x = 52,510,313.19/10,389.28
  6. Step 6: Final answer
    x = 5,054.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.