Home / 13,313.13-18,371.62-8,276.20

Finding the Fourth Proportional to 13,313.13, 18,371.62 and 8,276.20

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Solution

The fourth proportional to 13,313.13, 18,371.62 and 8,276.20 is: 11,420.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,313.13 : 18,371.62 = 8,276.20 : x
  2. Step 2: Convert to fraction form
    13,313.13/18,371.62 = 8,276.20/x
  3. Step 3: Cross multiply
    13,313.13x = 18,371.62 × 8,276.20
  4. Step 4: Simplify right side
    13,313.13x = 152,047,157.79
  5. Step 5: Solve for x
    x = 152,047,157.79/13,313.13
  6. Step 6: Final answer
    x = 11,420.84

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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.