Home / 13,416.94-18,515.36-7,449.50

Finding the Fourth Proportional to 13,416.94, 18,515.36 and 7,449.50

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Solution

The fourth proportional to 13,416.94, 18,515.36 and 7,449.50 is: 10,280.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,416.94 : 18,515.36 = 7,449.50 : x
  2. Step 2: Convert to fraction form
    13,416.94/18,515.36 = 7,449.50/x
  3. Step 3: Cross multiply
    13,416.94x = 18,515.36 × 7,449.50
  4. Step 4: Simplify right side
    13,416.94x = 137,930,174.32
  5. Step 5: Solve for x
    x = 137,930,174.32/13,416.94
  6. Step 6: Final answer
    x = 10,280.30

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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.