Home / 13,280.09-18,326.25-7,311.60

Finding the Fourth Proportional to 13,280.09, 18,326.25 and 7,311.60

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Solution

The fourth proportional to 13,280.09, 18,326.25 and 7,311.60 is: 10,089.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280.09 : 18,326.25 = 7,311.60 : x
  2. Step 2: Convert to fraction form
    13,280.09/18,326.25 = 7,311.60/x
  3. Step 3: Cross multiply
    13,280.09x = 18,326.25 × 7,311.60
  4. Step 4: Simplify right side
    13,280.09x = 133,994,209.50
  5. Step 5: Solve for x
    x = 133,994,209.50/13,280.09
  6. Step 6: Final answer
    x = 10,089.86

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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.