Home / 13,485.40-18,672.06-13,226.20

Finding the Fourth Proportional to 13,485.40, 18,672.06 and 13,226.20

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Solution

The fourth proportional to 13,485.40, 18,672.06 and 13,226.20 is: 18,313.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,485.40 : 18,672.06 = 13,226.20 : x
  2. Step 2: Convert to fraction form
    13,485.40/18,672.06 = 13,226.20/x
  3. Step 3: Cross multiply
    13,485.40x = 18,672.06 × 13,226.20
  4. Step 4: Simplify right side
    13,485.40x = 246,960,399.97
  5. Step 5: Solve for x
    x = 246,960,399.97/13,485.40
  6. Step 6: Final answer
    x = 18,313.17

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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.